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Atomic spectral line shift
The isomeric shift (also called isomer shift) is the shift on atomic spectral lines and gamma spectral lines, which occurs as a consequence of replacement
Isomeric_shift
Spectroscopic technique
are observed: isomeric shift, quadrupole splitting, and hyperfine magnetic splitting. Isomer shift (δ) (also sometimes called chemical shift, especially
Mössbauer_spectroscopy
German physicist
of Bucharest. In a paper from 1956, he predicted the phenomenon of isomeric shift, his calculations showing that it should be measurable by atomic spectroscopy
Richard_M._Weiner
Frequencies of light emitted by atoms or chemical compounds
Gas-discharge lamp, Table of emission spectra of gas discharge lamps Isomeric shift Isotopic shift Luminous coefficient Plasma physics Rydberg formula Spectral
Emission_spectrum
Field of physics that studies the atom
Ramsey Mike Seaton John C. Slater George Paget Thomson Particle physics Isomeric shift Atomism Ionisation Quantum Mechanics Electron Correlation Quantum Chemistry
Atomic_physics
Quantitative study of the energy spectra of gamma-ray sources
radiation. Alpha-particle spectroscopy Gamma probe Gamma ray spectrometer Isomeric shift Liquid scintillation counting Mass spectrometry Mössbauer spectroscopy
Gamma_spectroscopy
Field of physics that studies atomic interactions
neutron shells (magic numbers). Physics portal Nuclear technology portal Isomeric shift Neutron-degenerate matter Nuclear chemistry Nuclear matter Nuclear model
Nuclear_physics
Model of the atomic nucleus
portal Nuclear structure Table of nuclides Semi-empirical mass formula Isomeric shift Interacting boson model "Shell Model of Nucleus". HyperPhysics. Nobel
Nuclear_shell_model
Resonant and recoil-free emission and absorption of gamma radiation by atomic nuclei
can be observed in lattice-bound chromophores at low temperatures. Isomeric shift Mössbauer rotor experiments Mössbauer spectroscopy Nuclear spectroscopy
Mössbauer_effect
Study of matter-light interactions at small scales
approximation Frequency doubling Diffraction Hyperfine structure Interferometry Isomeric shift Metamaterial cloaking Molecular energy state Molecular modeling Nanotechnology
Atomic, molecular, and optical physics
Atomic,_molecular,_and_optical_physics
allowed probing for the hyperfine shift induced by the different nuclear spin states of the ground and the isomeric state. In this way, a first experimental
Isotopes_of_thorium
(geomagnetism) Isolated system Isolation booth Isolator (microwave) Isomeric nuclide Isomeric shift Isomeric transition Isopleths Isopotential map Isoscalar Isospin
Index_of_physics_articles_(I)
particular finite size effects manifest themselves also in the isomeric shift and isotopic shift. The formation of hot spots assumes the establishment of local
Hot spot effect in subatomic physics
Hot_spot_effect_in_subatomic_physics
German nuclear physicist (1929–2022)
moments) and later increasingly in the field of materials science (isomeric shifts). The study of muonic atoms at CERN, as well as parity violation during
Egbert_Kankeleit
Chemical compound
The terpinenes are a group of isomeric hydrocarbons that are classified as monoterpenes. They each have the same molecular formula and carbon framework
Terpinene
Chemical compound
crowding of the interior hydrogens. There is evidence that it has two isomeric forms of comparable stability (trans, cis, trans, cis, trans, trans, cis-
Cyclotetradecaheptaene
Extremely accurate clock in development
nuclear optical clock is an atomic clock which uses photons from a nuclear isomeric transition as its reference frequency, instead of the atomic electron transition
Nuclear_clock
Fourth letter in the Greek alphabet
bond in an organic compound, the position of which is variant between isomeric forms. A simplex, simplicial complex, or convex hull. In chemistry, the
Delta_(letter)
Natural sweetener
is an organic compound with the formula HOCH(CH(OH)CH2OH)2. Two other isomeric sugar alcohols exist. It is a colorless or white crystalline solid. It
Xylitol
Chemical compound
equilibrium is estimated at 100 in aqueous solution. For the two other isomeric anthrols, the tautomeric equilibrium is reversed: they are phenolic. Anthrone
Anthrone
Class of organic compounds
RC(−OH)=NR'. They are tautomeric to non-tertiary amides (RC(=O)−NHR') and isomeric to oximes (RR'C=N−OH). The term "imino acid" is an obsolete term for this
Imidic_acid
Chemical compound
methyl substituents positioned symmetrically around the ring. The other two isomeric trimethylbenzenes are 1,2,4-trimethylbenzene (pseudocumene) and 1,2,3-trimethylbenzene
Mesitylene
Chemical reaction
allylic alcohol. The ester then undergoes a [3,3]-sigmatropic shift to create the isomeric chromate ester (2). Finally, oxidation of this intermediate yields
Babler_oxidation
Hypothetical device
The problem of obtaining a sufficient concentration of resonant excited (isomeric) nuclear states for collective stimulated emission to occur turns on the
Gamma-ray_laser
Chemical compound
is an organic compound with the formula C5H4NCHO. It is one of three isomeric pyridinaldehydes. The other isomers are pyridine-2-carboxaldehyde and
Pyridine-4-carbaldehyde
Isomers of chemical compounds that interconvert
considered a subset of acid-base behavior. Prototropic tautomers are sets of isomeric protonation states with the same empirical formula and total charge. Tautomerizations
Tautomer
American crime drama TV series (2008–2013)
Synthese der isomeren Ephedrine und ihrer Homologen" [On the synthesis of isomeric ephedrines and their homologues]. Justus Liebig's Annalen der Chemie (in
Breaking_Bad
study ground-state properties of exotic nuclei and produce high purity isomeric beams used for decay studies. CRIS does this by using the high resolution
CRIS_experiment
Chemical compound
as in the middle of the 20th century at least half a dozen hypothetical isomeric variants of two main options seemed to be consistent with the available
Hydrogen_peroxide
Clock that monitors the resonant frequency of atoms
Hudson, Eric R. (2 July 2024). "Laser excitation of the 229Th nuclear isomeric transition in a solid-state host". Physical Review Letters. 133 (1) 013201
Atomic_clock
Chemical property
readily accepted this structure, since it accounted for most of the known isomeric relationships of aromatic chemistry. Between 1897 and 1906, J. J. Thomson
Aromaticity
Chemical notation for the handedness of a chiral molecule or group
levulose because it is levorotatory. A rule of thumb for determining the D/L isomeric form of an amino acid is the "CORN" rule. The groups COOH, R, NH2 and H
Absolute_configuration
Chemical process for converting alkenes to aldehydes
selectivity. For example, the hydroformylation of propylene can afford two isomeric products, butyraldehyde or isobutyraldehyde: H2 + CO + CH3CH=CH2 → CH3CH2CH2CHO
Hydroformylation
Chemical compound
produced as intermediates during the syntheses of phosphaalkynes. Such isomeric species have never been isolated. With their characteristic C-P triple
Tert-Butylphosphaacetylene
Hydrocarbon compound (C6H6)
has already been chosen, by Liebig and Wöhler, for the compound that's isomeric with the oil of bitter almonds [benzaldehyde].) Laurent, Auguste (1836)
Benzene
Agent used to increase a fuel's octane rating
ethyl-benzene, also called gasoline aromatics Xylidine - any of a number of isomeric amines of xylene. In the U.S., where tetraethyllead had been blended with
Antiknock_agent
Device for storing charged particles
stable subatomic particles, like for example mass, fission yields and isomeric yield ratios. One initial object of study was the so-called geonium atoms
Penning_trap
Metastable nuclear isomer of technetium-99
isotope of great scientific interest, because it decayed by means of an isomeric transition with emission of a line spectrum of electrons coming from an
Technetium-99m
Cyclic compound (C2H4O)
number of addition reactions that result in ring-opening. Ethylene oxide is isomeric with acetaldehyde and with vinyl alcohol. Ethylene oxide is industrially
Ethylene_oxide
Two phenyl rings linked by a N=N double bond
isomerization. Under illumination, these molecules cycle between the two isomeric states. The photo-isomerization of azobenzene is extremely rapid, occurring
Azobenzene
Chemical element with atomic number 77 (Ir)
from 164 to 197. The most stable of these is 192m2Ir, which decays by isomeric transition with a half-life of 241 years, making it more stable than any
Iridium
Chemical element with atomic number 79 (Au)
with a half-life of only 7 ns. 184m1 Au has three decay paths: β+ decay, isomeric transition, and alpha decay. No other isomer or isotope of gold has three
Gold
Organochloride known as an insecticide
formed. The major component (77%) is the desired p,p' isomer. The o,p' isomeric impurity is also present in significant amounts (15%). Dichlorodiphenyldichloroethylene
DDT
Chemical compound
than the aromatic-ring or Dewar benzene-like isomers. Another compound isomeric with hexasilabenzene was first reported in 2010. This compound is reported
Silabenzene
production begin with either phenyl-2-propanone (P2P) or with one of the isomeric compounds pseudoephedrine and ephedrine. One procedure uses the reductive
History and culture of substituted amphetamines
History_and_culture_of_substituted_amphetamines
Device that emits light via optical amplification
The pursuit of a high-quantum-energy laser using transitions between isomeric states of an atomic nucleus has been the subject of wide-ranging academic
Laser
Periodic table of the elements with eight or more periods
; Miller, H. W.; Kolb, D.; Brandt, R. (2007). "Existence of long-lived isomeric states in naturally-occurring neutron-deficient Th isotopes". Phys. Rev
Extended_periodic_table
Heterocyclic aromatic organic compound
"Synthèse d'une base isomère à la toluidine" [Synthesis of a base [that is] isomeric to toluidine]. Giornale di Scienze Naturali ed Economiche (Journal of Natural
Pyridine
Chemical compound
"Organosulfur Derivatives of Metal Carbonyls. I. The Isolation of Two Isomeric Products in the Reaction of Triiron Dodecacarbonyl with Dimethyl Disulfide"
Triiron_dodecacarbonyl
1021/ja01152a103. Wagner, R. B.; Moore, James A. (1950). "The Reaction of the Isomeric α-Bromomethyl Cyclohexyl Ketones with Sodium Methoxide". Journal of the
List_of_organic_reactions
Harmful high-frequency radiation
driven by historic limitations of older X-ray tubes and low awareness of isomeric transitions. Modern technologies and discoveries have shown an overlap
Ionizing_radiation
Chemical element with atomic number 73 (Ta)
180mTa (m denotes a metastable state) is predicted to decay in three ways: isomeric transition to the ground state of 180Ta, beta decay to 180W, or electron
Tantalum
Strategic SAM system
the oxidizer and TG-02 (toxic mixture of 50-52% triethylamine and 48-50% isomeric xylidine) as the fuel. The booster fires for about 4–5 seconds and the
S-75_Dvina
The Diels–Alder reaction of cyclopentadiene with furan can produce two isomeric products. At room temperature, kinetic reaction control prevails and the
Thermodynamic and kinetic reaction control
Thermodynamic_and_kinetic_reaction_control
Pharmaceutical compound
ISBN 9780262050098, OCLC 208409, OL 22156530M, The optical enantiomorphs and the isomeric diastereoisomers of LSD (Vis.. l-LSD, d-iso-LSD and l-iso-LSD) have been
L-LSD
because of its larger nuclear spin and quadrupole. The range of chemical shifts is the same of both nuclei and lies within +10 (for LiNH2 in liquid NH3)
Isotopes_of_lithium
Class of drugs
sense of two or more co-formulated therapeutic agents, but combinations of isomeric substances whose pharmacological activity may reside predominantly in one
Chiral_drugs
Industrial synthesis of chemical substance
Ludger; Maag, Hans (2006). "Preparation and Structure Proof of the Four Isomeric Dicyanocobyrinic Acid Hexamethyl Ester Monoamides Carrying the Amide Group
Vitamin_B12_total_synthesis
Prediction in nuclear physics
farther from spherical magic numbers are deformed, causing magic numbers to shift or new magic numbers to appear. Current theoretical investigation indicates
Island_of_stability
Chemical reaction of imides with alkyl hydrazines
designation for the chemical reaction of imides with alkyl hydrazines to form an isomeric mixture of 1,2,4-triazoles. It was initially described by the German chemist
Einhorn–Brunner_reaction
Psychedelic drug
Marona-Lewicka D, Kurrasch-Orbaugh DM (September 2002). "Lysergamides of isomeric 2,4-dimethylazetidines map the binding orientation of the diethylamide
LSD
Pharmaceutical compound
ISBN 9780262050098, OCLC 208409, OL 22156530M, The optical enantiomorphs and the isomeric diastereoisomers of LSD (Vis.. l-LSD, d-iso-LSD and l-iso-LSD) have been
L-Iso-LSD
Protein-coding gene in the species Homo sapiens
Zhang Q, Ragnauth CD, Skepper JN, et al. (2005). "Nesprin-2 is a multi-isomeric protein that binds lamin and emerin at the nuclear envelope and forms a
SYNE2
Branch of music theory
inversionally equivalent. Another name for this relationship, used by Hanson, is "isomeric". Operations on ordered sequences of pitch classes also include transposition
Set_theory_(music)
F-block chemical elements
co-discoverers of lawrencium. Thirty-four isotopes of actinium and eight excited isomeric states of some of its nuclides are known, ranging in mass number from 203
Actinide
1990 video game
The fake isomerical view was dropped in the subsequent installment of the game Breach 3. If Rules of Engagement is available, that game shifts to tactical
Breach_2
Synthesis of alkenes by base-catalysed decomposition of tosylhydrazones
formation of allylsilanes instead of equal amounts of allylsilanes and isomeric homoallylsilanes, analogous to the mixture of products seen in the dialkyl
Bamford–Stevens_reaction
Chemical compound
total synthesis of neosporol, a natural product: The preparation of the isomeric compound sporol involved a similar dioxolane formation. In this case, the
Trifluoroperacetic_acid
Pharmaceutical compound
acid four-ring nucleus possesses two asymmetric centers requiring four isomeric forms. All have been prepared and the hallucinogenic action is uniquely
Iso-LSD
Protein family
p-coumaric acid in the ligand binding site. Upon transitioning to the cis-isomeric form of p-coumaric acid the favorable hydrogen bonds are no longer in close
Photoactive_yellow_protein
1938 achievement in physics
"The process must be neutron capture by uranium-238, which leads to three isomeric nuclei of uranium-239. This result is very difficult to reconcile with
Discovery_of_nuclear_fission
Subatomic particle with positive charge
electron–proton scattering differs from the value measured via the Lamb shift in muonic hydrogen (an exotic atom made of a proton and a negatively charged
Proton
Chemical compound
comprising five atoms. DVTOSU is a diallyl acetal and the precursor for the isomeric ketene acetal monomer 3,9-diethylidene-2,4,8,10-tetraoxaspiro[5.5]undecane
3,9-Divinyl-2,4,8,10-tetraoxaspiro(5.5)undecane
3,9-Divinyl-2,4,8,10-tetraoxaspiro(5.5)undecane
Type of molecule
applications, especially in the framework of nanotechnology. Depending on the isomeric state, photoswitches have the potential to replace transistors used in
Photoswitch
Family of proteins
by light. The retinal molecule can take on several different cis-trans isomeric forms, such as all-trans, 11-cis and 13-cis. Photoisomerization (light-dependent
Retinylidene_protein
Dipolar compound
Wolfgang; Huber, Helmut (1967). "Stereospecific Conversion of cis-trans Isomeric Aziridines to Open-Chain Azomethine Ylides". Journal of the American Chemical
Azomethine_ylide
Chemical compound
November 1974). "Mixed-valence derivatives of phosphorus sulfides. Two new isomeric thiophosphoryl-μ-thio-phosphines containing fluorine and trifluoromethyl
Phosphorothioic chloride difluoride
Phosphorothioic_chloride_difluoride
Number of heavy particles in the atomic nucleus
below), so it inherently loses accuracy as the balance between protons shifts in either direction, such as 1 H (0 neutrons) or 238 U (significantly more
Mass_number
German nuclear chemist and Nobel laureate (1879–1968)
processes must be neutron capture by uranium-238, which leads to three isomeric nuclei of uranium-239. This result is very difficult to reconcile with
Otto_Hahn
Type of carbene demonstrating particular stability
imidazol-2-ylidene groups: In principle, triazol-5-ylidenes occur in two isomeric families, the 1,2,3-triazol-5-ylidenes and 1,2,4-triazol-5-ylidenes: Few
Persistent_carbene
Pericyclic chemical reaction
by putting more steric demands into the system, we start to observe the isomeric 4-carboxyl pyrazolines. The ratio of these two regioisomers depends on
1,3-Dipolar_cycloaddition
Reversible chemical transformation by absorption of electromagnetic radiation
their photochromic properties. WO3 transitions between two optical states, shifting from transparent to blue when exposed to light, heat, or electricity. The
Photochromism
American chemist (1924–2017)
Journal of the American Chemical Society. Jerome A. Berson, Gajewski JJ. Isomeric carbonium ions. Ring expansion of the syn- and anti-2-norbornene-7-carbinyl
Jerome_A._Berson
Biochemical identification method
absorb light. Different isomeric manifestations of the molecule absorbs different wavelengths of light, so that each isomeric species can display a different
Fluorescent_tag
Chemical reaction
cycloheptatriene derivatives. The resulting product was a mixture of four isomeric carboxylic acids. Variations in the reaction arise from methods of carbene
Buchner_ring_expansion
Force that acts between the protons and neutrons of atoms
dependence, the precise value of the πNN coupling constant, improved phase-shift analysis, high-precision NN data, high-precision NN potentials, NN scattering
Nuclear_force
Chemical compound
Anthony; Cross, R. James (April 2000). "A New Method for Separating the Isomeric C84 Fullerenes". Journal of the American Chemical Society. 122 (13): 3216–3217
Helium_dimer
Protein found in mammals
21-Hydroxylase Deficiency Should Include 21 Deoxycortisol Analysis with Appropriate Isomeric Steroid Separation". Int J Neonatal Screen. 9 (4): 58. doi:10.3390/ijns9040058
Steroid_11β-hydroxylase
Reaction that splits an atomic nucleus
trifluoride counter, with the control rods removed, after the end of each shift. On 2 Dec. 1942, with k approaching 1.0, Fermi had all but one of the control
Nuclear_fission
perovskite solar cells using the composition PEA0.15FA0.85SnI3 and trans-isomeric fulleropyrrolidine (TPPF) additives. TPPF improved crystal orientation
Tin-based perovskite solar cell
Tin-based_perovskite_solar_cell
Chemical reaction
that thermolysis of 1-diazo-3,3,3-triarylpropan-2-ones gave unexpected isomeric products. Copper (II) and rhodium (II) salts tend to give vinylogous Wolff
Wolff_rearrangement
Chemical element with atomic number 116 (Lv)
previous data; it is believed that this chain may instead originate from an isomeric state, 293mLv. In the 2016 RIKEN experiment, one atom that may be assigned
Livermorium
in combination with mass spectrometry (GC-MS) is capable of separating isomeric compounds. Although GC has been successfully coupled to PTR-MS in the past
Proton-transfer-reaction mass spectrometry
Proton-transfer-reaction_mass_spectrometry
American botanist
response to red and far-red light. Phytochromes have two interconvertible isomeric forms, Pfr and Pr. Red light converts the pulvinus phytochrome to the Pfr
Ruth_Lyttle_Satter
Nuclear reactor cooled or moderated by an organic liquid
critical in 1957. This used biphenyl and Santowax (commercial name of an isomeric mixture of terphenyl) for coolant and moderation and operation was generally
Organic_nuclear_reactor
Class of enzymes which convert a molecule between isomeric forms
connectivity from one another, as in the case of hexane and its four other isomeric forms (2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, and 2,3-dimethylbutane)
Isomerase
Characterization of nuclide stability
proton, hence shifts the nuclide to the right and toward greater stability. A nuclide on the right similarly undergoes β+ decay, which shifts the nuclide
Valley_of_stability
Structure of the atomic nucleus
of stability. For example, observations of unstable isotopes have shown shifting and even a reordering of the single particle levels of which the shell
Nuclear_structure
Group 14 chemical compounds
Phillips, Andrew D.; Olmstead, Marilyn M.; Power, Philip P. (2003-03-01). "Isomeric Forms of Divalent Heavier Group 14 Element Hydrides: Characterization of
Germanium(II)_hydrides
Process by which light activates retinal cells
photoreceptor cells. With screening pigment, the opsin Rh3 is short wave shifted from 345 nm to 330 nm and Rh4 from 375 nm to 355 nm. Whether screening
Visual_phototransduction
ISOMERIC SHIFT
ISOMERIC SHIFT
Surname or Lastname
English and German
English and German : from a Germanic personal name, either a short form of compound names such as Billard, or else a byname Bill(a), from Old English bil ‘sword’, ‘halberd’ (or a Continental cognate). (Bill as a short form of William was not used until the 17th century.)English : metonymic occupational name for a maker of pruning hooks and similar implements, from Middle English bill, from Old English bil ‘sword’, with the meaning shifted to a more peaceful agricultural application (see Biller 5).
Surname or Lastname
English
English : from Middle English persone, parsoun ‘parish priest’, ‘parson’ (Old French persone, from Latin persona ‘person’, ‘character’), hence a status name for a parish priest or perhaps a nickname for a devout man. The reasons for the semantic shift from ‘person’ to ‘priest’ are not certain; the most plausible explanation is that the local priest was regarded as the representative person of the parish. The phonetic change from -er- to -ar- was a regular development in Middle English.Americanized form of one or more like-sounding Jewish names.Americanized spelling of Swedish Pärsson, Persson (see Persson).
Surname or Lastname
English
English : from Middle English smoc, smok ‘smock’, ‘shift’, hence a metonymic occupational name for someone who made or sold such garments, or a nickname for someone who habitually wore a smock (the usual everyday working garment of a peasant).
Male
Scandinavian
Scandinavian name derived from Old Norse hamr, HEMMING means "shape." The name may have originated as a byname for a "shape-shifter" or "werewolf."
Female
Finnish
Finnish myth name from the Kalevala, possibly LOUHI means "trance." Louhi was a queen of Pohjola, and a witch with the ability to shape-shift and cast powerful magic spells.Â
Male
German
Old German name, GOMERIC means "man-power."
Male
Welsh
Welsh Arthurian legend name of a Knight of the Round Table best remembered as the lover of Esyllt (French: Tristan and Iseult). But the earliest texts hint at a character who was far more than just a lover; he was a master of deception and had the ability to shape-shift, a definite attribute of a trickster. In the Cymric Trioedd, Esyllt is his uncle's wife; with the help of the swineherd, Drystan arranges for a secret tryst with her, but Arthur shows up unexpectedly wanting to steal some of his uncle's swine, and Drystan somehow outwits the Forever King.     The name has been associated with Latin tristis "sad," referring to the tragic fate of the young "lover." It has been linked with Pictish drust of unknown DRYSTAN means, and Celtic drest, "riot, tumult." The latter comes closest to fitting his true character; compare with Old English þr�st/þrÃste: "bold, daring, rash, audacious," and even "shameless."Â
Male
Greek
(Αἴολος) Greek name AIOLOS means "sparkling; quick-shifting; quick-moving." In mythology, this is the name of the god of winds.Â
Boy/Male
Buddhist, Hindu, Indian
Respond to the Mystery; Esoteric Dharma; Glorious King
Surname or Lastname
English
English : occupational name for a servant, Middle English ladde. The word first appeared in the 13th century, with the meaning ‘servant’ or ‘man of humble birth’, the modern meaning of ‘young man’, ‘boy’ being a later shift.Most American bearers of this name trace their ancestry to a certain Daniel Ladd, who emigrated from London to Ipswich, MA, in 1634.
Boy/Male
Buddhist, Hindu, Indian
Original Law; Esoteric Dharma
Male
Greek
Variant spelling of Greek Aiolos, AEOLOS means "sparkling; quick-shifting; quick-moving."
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