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Saunderson, D.H.; Rainey, V.S.
Inelastic Scattering of Neutrons in Solids and Liquids. V. I. Proceedings of the Symposium on Inelastic Scattering of Neurons in Solids and Liquids1963
Inelastic Scattering of Neutrons in Solids and Liquids. V. I. Proceedings of the Symposium on Inelastic Scattering of Neurons in Solids and Liquids1963
AbstractAbstract
[en] The energy transfer spectra of methyl-, ethyl- and n-amyl alcohols in the liquid state at room temperature have been measured by cold neutron scattering and beryllium detector methods. A description is given of the apparatus used for the latter measurements. The principle feature observed in each case is a broad band of energy transfers from 0 to 50 m V. At higher energies there is some indication of the excitation of a level at 170 m V in the neutron energy loss spectra. This corresponds to the molecular vibrational mode in which the hydroxyl group bends with respect to the C -O bond observed by 1-R spectroscopy at 170 mV. The C -O bond stretching mode at 128 mV was not observed. The 0 - 50 mV band is discussed in relation to previous measurements of the variation of total cross- section for long wavelength neutrons and optical measurements of free and hindered internal rotation in alcohol molecules. (author)
[fr]
Les spectres de transfert d'energie des alcools methylique, ethylique et n-amylique ont ete mesures a l'etat liquide et a la temperature ambiante, au moyen de la diffusion de neutrons lents et par des methodes de detection au beryllium. Les auteurs decrivent l'appareil employe pour ces dernieres mesures. La caracteristique principale observee dans chacun des cas est une large bande de transferts d'energie allant de 0 a 50 mV. Pour des energies superieures, quelques indices donnent a penser que le niveau de 170 mV est excite dans les spectres de perte d'energie des neutrons. Ceci correspond au mode de vibration moleculaire dans lequel le groupe hydroxyle se deplace vers la liaison C -O observee par spectroscopie infrarouge a 170 mV. Le mode d'extension des liaisons C -O a 128 mV n'a pas ete observe. Les auteurs etudient la bande de 0 a 50 m V en fonction de mesures precedentes de la variation de la section efficace totale des neutrons a grande longueur d'onde et des mesures optiques des rotations libres et des rotations internes amorties dans les molecules d'alcool. (author)[es]
Los autores han medido los espectros de transmision de energia de los alcoholes metilico, etilico y n-amilico en estado liquido a la temperatura ambiente por el metodo de dispersion de neutrones frios y del detector de berilio. Describen los aparatos utilizados para llevar a cabo esas mediciones. La particularidad mis notable que se observa en cada caso es una amplia banda de transmisiones de energia de 0 a 50 m V. Para energias mas elevadas, hay indicios de la excitacion de un nivel a 170 mV en el espectro de perdida de energia neutronica. Ello corresponde al modo vibratorio molecular en que el radical hidroxilo se desplaza respecto al enlace C -O, observado por espectroscopia infrarroja a 170 meV. No se ha observado el modo tensor del enlace C -O a 128 mV. L)s autores estudian la banda 0-50 mV en relacion con mediciones anteriormente efectuadas de la variacion de la seccion eficaz total para neutrones de onda larga, y con mediciones opticas de movimientos rotatorios libres y restringidos en las moleculas de alcohol. (author)Original Title
Diffusion inelastique des neutrons dans les alcools methylique, ethylique et n-amylique; Nbuprugoe rasseyanie nejtronov v metilovom, ehtilovom i normal'nom amilovom spirtakh; Dispersion inelastica de neutrones por los alcoholes metiuco, etilico y n-amilico
Source
International Atomic Energy Agency, Vienna (Austria); United Nations Educational, Scientific and Cultural Organization (France); 486 p; Jan 1963; p. 413-422; Symposium on Inelastic Scattering of Neutrons in Solids and Liquids; Chalk River (Canada); 10-14 Sep 1962; ISSN 0074-1884;
; Abstract also available in Russian; 5 figs., 10 refs.

Record Type
Book
Literature Type
Conference
Country of publication
ALCOHOLS, ALKALINE EARTH METALS, BARYONS, COHERENT SCATTERING, CROSS SECTIONS, DIFFRACTION, ELECTRON SPECTROSCOPY, ELEMENTARY PARTICLES, ELEMENTS, ENERGY-LEVEL TRANSITIONS, FERMIONS, HADRONS, HYDROXY COMPOUNDS, METALS, NEUTRONS, NUCLEONS, ORGANIC COMPOUNDS, SCATTERING, SPECTROSCOPY, TEMPERATURE RANGE
Reference NumberReference Number
Related RecordRelated Record
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INIS IssueINIS Issue
Legrand, J.
CEA Saclay, 91 - Gif-sur-Yvette (France)1965
CEA Saclay, 91 - Gif-sur-Yvette (France)1965
AbstractAbstract
[en] The object of this work is the study of techniques of measurement of the absolute activity of electron capture nuclides. Two methods have been specially studied. Determination of the number of X rays emitted from the K shell due to the reorganization of atomic electrons following electron capture. This measurement was made with a high pressure (5 kg/cm2) 4π proportional counter. The absorption in the source and the backing were also studied. To determine the absolute activity it is necessary to know the fluorescence yield and the different capture probabilities PL and PK. When the electron capture is followed by γ emission (within the resolution time of the coincidence circuit) the activity was determined through the X-γ coincidence method. In such a case it is not necessary to know the fluorescence yield and the capture probabilities. Various corrections - dead time, chance coincidences - were also studied. This method minimizes the decay scheme corrections. By applying these two methods to the following nuclides: Cr51, Mn54 and Zn65, the corresponding fluorescence yields have been determined: vanadium ωK = 0.191 ±0.002, chromium ωK = 0.262 ± 0.002 and copper ωK = 0.390 ± 0.004. (author)
[fr]
Le but de ce travail est d'etudier les techniques de mesure absolue des isotopes se desintegrant par capture electronique. Deux methodes ont ete plus specialement etudiees. Determination du nombre de rayons X emis a partir de la couche K, lors du rearrangement atomique suivant la capture electronique. Cette mesure est effectuee a l'aide d'un compteur proportionnel 4π sous pression (5 kg/cm2). Les corrections d'absorption dans le support de source et d'autoabsorption sont etudiees. Pour determiner l'activite absolue, il est necessaire de connaitre le rendement de fluorescence ωK et les differentes probabilites de capture, PL et PK. Lorsque la capture electronique est suivie d'une emission γ en coincidences X-γ. Il n'est pas necessaire de connaitre le rendement de fluorescence et les probabilites de capture. Les differentes corrections sont etudiees (temps-mort, coincidences fortuites). Cette methode permet de minimiser les corrections dues aux schemas de desintegration. En appliquant ces deux methodes aux radionucleides suivants: Cr51, Mn54 et Zn65, les rendements de fluorescence correspondants ont ete determines: vanadium ωK = 0.191 ± 0.002, chrome ωK = 0.262 ± 0.002, cuivre ωK = 0.390 ± 0.004. (auteur)Original Title
Contribution a la mesure absolue de l'activite des isotopes se desintegrant par capture electronique. Determination du rendement de fluorescence de quelques elements
Primary Subject
Source
Sep 1965; 60 p; 26 refs.; These pour l'obtention du diplome d'Ingenieur C. N. A. M.
Record Type
Report
Literature Type
Thesis/Dissertation
Report Number
Country of publication
BETA DECAY, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CHROMIUM ISOTOPES, COUNTING TECHNIQUES, DAYS LIVING RADIOISOTOPES, DECAY, ELECTRON CAPTURE DECAY, ELECTRON CAPTURE RADIOISOTOPES, ELECTRON SPECTROSCOPY, EMISSION SPECTROSCOPY, EVEN-ODD NUCLEI, INTERMEDIATE MASS NUCLEI, ISOTOPES, MANGANESE ISOTOPES, NUCLEAR DECAY, NUCLEI, ODD-ODD NUCLEI, RADIOISOTOPES, SPECTROSCOPY, ZINC ISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Chalons, Francois
Faculte des Sciences de l'Universite de Poitiers (France); College Scientifique Universitaire de TOURS, Laboratoire de Physique du Solide (France)1968
Faculte des Sciences de l'Universite de Poitiers (France); College Scientifique Universitaire de TOURS, Laboratoire de Physique du Solide (France)1968
AbstractAbstract
[en] In this research thesis, the author first recalls the practical importance of phenomena of X ray absorption, and then briefly defines the characteristics of the various absorption processes. In the next part, he presents the experimental installation, and reports the study of the importance of scattering in the global absorption coefficient. Due to the scattering of many experimental data, the author has undertaken a systematic study of sources of uncertainty, and has defined measurement conditions required to obtain reproducible results. The obtained coefficients are presented and studied in order to check the validity of empirical rules proposed by some authors. In a second part, the author reports the use of an electronic microscope for the study of the continuous background of X ray emission with respect to the anode nature and to the energy of incident electrons.
[fr]
L'interaction des rayons X ou des electrons avec la matiere a lieu suivant un certain nombre de processus ayant leur probabilite propre. Chacun de ces processus varie suivant le domaine d'energie considere et le numero atomique de l'absorbeur. Le grand nombre d'etudes experimentales relatives a l'absorption massique des rayons X effectuees au debut du siecle n'a pas ete poursuivi et il a fallu attendre les besoins dus au developpement des methodes d'analyse non destructrices par fluorescence X et emission directe sous l'impact d'une microsonde pour que l'on pense a combler les lacunes du domaine experimental et preciser les premieres valeurs mesurees. Au premier chapitre, apres un rappel de l'importance pratique des phenomenes d'absorption X, nous definissons brievement les caracteristiques des differents processus d'absorption. Apres une description de notre dispositif experimental, nous etudions l'importance de la diffusion dans le coefficient global d'absorption. La dispersion d'un grand nombre de donnees experimentales nous amene ensuite a proceder a une etude systematique de toutes les causes d'incertitudes et a definir les conditions de mesure necessaires pour l'obtention de resultats reproductibles. Les coefficients obtenus sont ensuite exposes et etudies afin de controler la validite des lois empiriques proposees par certains auteurs. Dans une deuxieme partie nous utilisons un microscope electronique que nous avons achete a l'administration des domaines, pour etudier le fond continu d'emission X suivant la nature de l'anode et de l'energie des electrons incidents. Nous decrivons les modifications apportees dans ce but a l'appareil et les premiers resultats obtenus. (auteur)Original Title
Contribution a l'etude de l'absorption massique des rayons X. Application du microscope electronique a l'etude du fond continu d'anodes massives
Primary Subject
Secondary Subject
Source
1968; 83 p; 33 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses; These Docteur de troisieme cycle de physique du solide
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Morucci, Jean-Pierre
Faculte des Sciences d'Orsay, Universite de Paris (France); Centre d'Etudes Nucleaires de Saclay, Service d'Electronique Physique (France)1969
Faculte des Sciences d'Orsay, Universite de Paris (France); Centre d'Etudes Nucleaires de Saclay, Service d'Electronique Physique (France)1969
AbstractAbstract
[en] A coincidence is made between the electric information provided by the electrons of an avalanche head and the light information received on a photomultiplier located at the output slit of a grating monochromator. In this way a recording is obtained which varies according to the light emitted by an avalanche in binary mixtures of xenon and organic vapour (total pressure: one atmosphere). It is shown that: a) - a continuum occurs in the case of every mixture; b) - there is a spectrum of lines identifiable with xenon, but its importance decreases as the ionization potential of the added vapour lessens. A theory on the visible continuum of xenon, by direct electron-xenon molecule interaction, is then proposed. This is supported by an experiment showing that there is a substantial increase of visible light, in the absence of excited xenon states (Xe* 5p56s). (author)
[fr]
Une coincidence est faite entre l'information electrique donnee par les electrons d'une tete d'avalanche et l'information lumineuse recue sur un photomultiplicateur place a la sortie d'un monochromateur a reseau. On obtient ainsi un enregistrement en fonction de la longueur d'onde de l'emission lumineuse d'une avalanche dans des melanges binaires xenon + vapeur organique (pression totale: 1 atmosphere). On met en evidence: - un spectre continu se produisant pour tous les melanges; - un spectre de raies identifiables au xenon, mais d'autant moins important que le potentiel d'ionisation de la vapeur ajoutee est plus faible. Une theorie sur l'emission du continuum visible du xenon, par interaction directe electron-molecule de xenon, est ensuite proposee; elle s'appuie sur une experience mettant en evidence une augmentation importante de lumiere visible, en l'absence d'etats excites du xenon (Xe* 5p56s). (auteur)Original Title
Etude de l'emission lumineuse des avalanches electroniques dans des melanges binaires contenant essentiellement du xenon
Primary Subject
Secondary Subject
Source
5 Dec 1969; 127 p; 175 refs.; Available from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/inis/Contacts/; These Docteur Es-Sciences
Record Type
Report
Literature Type
Thesis/Dissertation
Report Number
Country of publication
BINARY MIXTURES, ELECTRIC FIELDS, ELECTRON DETECTION, ELECTRON DIFFRACTION, ELECTRON MULTIPLIERS, ELECTRON SPECTRA, ELECTRON-NUCLEON INTERACTIONS, LIGHT SCATTERING, METHANE, METHYLAL, PHOTOELECTRON SPECTROSCOPY, PHOTOEMISSION, PHOTOMULTIPLIERS, RADIATION DETECTORS, SCINTILLATION COUNTERS, TOWNSEND DISCHARGE, VISIBLE RADIATION, XENON
ALKANES, CHARGED PARTICLE DETECTION, COHERENT SCATTERING, DETECTION, DIFFRACTION, DISPERSIONS, ELECTRIC DISCHARGES, ELECTROMAGNETIC RADIATION, ELECTRON SPECTROSCOPY, ELECTRON TUBES, ELEMENTS, EMISSION, ETHERS, FLUIDS, GASES, HYDROCARBONS, INTERACTIONS, LEPTON-BARYON INTERACTIONS, LEPTON-HADRON INTERACTIONS, LEPTON-NUCLEON INTERACTIONS, MEASURING INSTRUMENTS, MIXTURES, NONMETALS, ORGANIC COMPOUNDS, ORGANIC OXYGEN COMPOUNDS, PARTICLE INTERACTIONS, PHOTOTUBES, RADIATION DETECTION, RADIATION DETECTORS, RADIATIONS, RARE GASES, SCATTERING, SECONDARY EMISSION, SPECTRA, SPECTROSCOPY
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Secondary Subject
Source
18 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; v. 12(1); p. 11-21
Country of publication
ABSORPTION SPECTROSCOPY, ACCURACY, ACTIVATION ANALYSIS, CHARGED PARTICLES, COMPARATIVE EVALUATIONS, ELECTRON DIFFRACTION, EMISSION SPECTROSCOPY, FLUORESCENCE SPECTROSCOPY, MASS SPECTROSCOPY, MICROANALYSIS, NEUTRON BEAMS, PHOTOELECTRON SPECTROSCOPY, QUALITATIVE CHEMICAL ANALYSIS, QUANTITATIVE CHEMICAL ANALYSIS, SENSITIVITY, STRUCTURAL CHEMICAL ANALYSIS, X-RAY SPECTROSCOPY
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Record Type
Journal Article
Journal
Acta Astronomica; v. 22 p. 11-32
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Record Type
Journal Article
Journal
Acta Astronomica; v. 22 p. 33-40
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Helms, C.R.
Stanford Univ., Calif. (USA)1973
Stanford Univ., Calif. (USA)1973
AbstractAbstract
No abstract available
Original Title
Thesis
Primary Subject
Source
1973; 221 p; University Microfilms Order No. 73-30,409.; Thesis (Ph. D.).
Record Type
Report
Literature Type
Thesis/Dissertation
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Secondary Subject
Record Type
Journal Article
Journal
Bunseki Kiki; v. 11(9); p. 563-572
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Historical review
Primary Subject
Source
1973; 445 p; John Wiley and Sons, Inc; New York
Record Type
Book
Country of publication
ATOMS, BIOCHEMISTRY, COLLISIONS, CONFIGURATION INTERACTION, DENSITY MATRIX, ELECTRONIC STRUCTURE, ELECTRONS, FIELD THEORIES, GROUP THEORY, HARTREE-FOCK METHOD, HYDROGEN, LIGANDS, LINEAR MOMENTUM, MATHEMATICAL SPACE, MATTER, MOLECULES, PAULI PRINCIPLE, PHOTOELECTRON SPECTROSCOPY, QUANTUM MECHANICS, SCATTERING, SOLIDS, SPIN, SYMMETRY, TIME DEPENDENCE, VALENCE, X RADIATION
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
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