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Bartine, D.E.; Oblow, E.; Mynatt, F.R.
Oak Ridge National Lab., Tenn. (USA)1972
Oak Ridge National Lab., Tenn. (USA)1972
AbstractAbstract
No abstract available
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Secondary Subject
Source
Dec 1972; 29 p
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Report
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AbstractAbstract
[en] In recent years multigroup sensitivity profiles and covariance matrices have been added to the Radiation Shielding Information Center's Data Library Collection (DLC). Sensitivity profiles are available in a single package. DLC-45/SENPRO, and covariance matrices are found in two packages, DLC-44/COVERX and DLC-77/COVERV. The contents of these packages are described and their availability is discussed
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Source
1980; 6 p; Specialists meeting on nuclear data and benchmarks for reactor shielding; Paris, France; 27 - 29 Oct 1980; Available from NTIS., PC A02/MF A01
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Report
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Conference
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Lovesey, S.W.
Science Research Council, Chilton (UK). Rutherford and Appleton Labs1980
Science Research Council, Chilton (UK). Rutherford and Appleton Labs1980
AbstractAbstract
[en] Illustrative cases of the use of neutron scattering in the study of the electronic properties of materials discussed here include scattering by localised electrons, narrow band materials and electron plasmas. (U.K.)
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Source
Dec 1980; 10 p
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Report
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AbstractAbstract
[en] Several topics of current interest are discussed including energy and intensity standards, direct thermal neutron capture, primary E2 transitions in (n,γ) reactions, nonstatistical effects in resonance neutron capture, transmission measurements of Sc employed in 2-keV facilities, and tests of Axel-Brink predictions of γ-ray strength functions via average resonance capture
Primary Subject
Source
1981; 19 p; 4. international symposium on neutron-capture gamma-ray spectroscopy and related topics; Grenoble, France; 7 - 11 Sep 1981; Available from NTIS., PC A02/MF A01
Record Type
Report
Literature Type
Conference; Numerical Data
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Country of publication
BARYON REACTIONS, BARYONS, DATA, ELEMENTARY PARTICLES, ELEMENTS, ENERGY RANGE, FERMIONS, HADRON REACTIONS, HADRONS, INFORMATION, KEV RANGE, METALS, NEUTRAL-PARTICLE TRANSPORT, NEUTRONS, NUCLEAR REACTIONS, NUCLEON REACTIONS, NUCLEONS, NUMERICAL DATA, RADIATION TRANSPORT, SPECTROSCOPY, TRANSITION ELEMENTS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Misulovin, A.
Israel Atomic Energy Commission, Beersheba. Nuclear Research Center-Negev; Ben-Gurion Univ. of the Negev, Beersheba (Israel). Dept. of Nuclear Engineering1978
Israel Atomic Energy Commission, Beersheba. Nuclear Research Center-Negev; Ben-Gurion Univ. of the Negev, Beersheba (Israel). Dept. of Nuclear Engineering1978
AbstractAbstract
[en] Energy distribution of the first and second neutrons from (n,2n) scattering event in 238U was evaluated according to the consistent compound nucleus model recently proposed by Segev. The law for deriving the energy distribution of secondary neutrons from a (n,2n) scattering event, depends on whether the reaction is considered as a simultaneous emission of two neutrons from one compound nucleus, or a successive emission of neutrons from different compound nuclei. Segev has presented a means of calculating the energy distribution assuming the latter model. The laws presented in the ENDF/B data files suggest the former model. The evaluation was based on inelastic level excitation and evaporation data for 238U and 237U. Data was retrieved from ENDF/B files. The evaporation data for 237U was based on (γ,n) reaction 238U. The inelastic level excitation data for 237U was evaluated at the Soreq Nuclear Research Centre. It is concluded from the application of Segev's model to 238U, that the energetic spectrum of secondary neutrons, is harder in the high range of energy than the one predicted by the use of the distribution law presented in ENDF/B data files. The spectrum of secondary (n,2n) neutrons, resulting from the interaction of 14 MeV neutrons in 238U calculated with Segev's model, is compared with the corresponding spectrum of the LLL library, ENDF/B library and the recent evaluation of BNWL. It is found that the spectrum evaluated by LLL and BNWL is harder than that evaluated with Segev's model
Primary Subject
Source
Dec 1978; 62 p; Thesis (M. Sc.).
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Report
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Thesis/Dissertation
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Lushchikov, V.I.; Popov, A.B.; Samosvat, G.S.; Taran, Yu.V.
Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of Neutron Physics1981
Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of Neutron Physics1981
AbstractAbstract
[en] The search for antineutrons in the neutron beam was made using a scintillation detector at 70 m from the IBR-30 reactor. It is found that the antineutron number does not exceed 1.7x10-10 from neutron number. That sets for neutron oscillation period in vacuum the lower limit of about 200 s
[ru]
Original Title
Ehksperimental'naya otsenka perioda ostsillyatsij nejtron-antinejtron
Primary Subject
Source
1981; 3 p; 9 refs.; 1 fig.
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Report
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Musgrove, A.R.; Allen, B.J.; Boldeman, J.W.
Australian Atomic Energy Commission Research Establishment, Lucas Heights1977
Australian Atomic Energy Commission Research Establishment, Lucas Heights1977
AbstractAbstract
[en] The neutron capture cross sections of the stable neodymium isotopes have been measured with high energy resolution in the keV region at the 40 m station of ORELA. Average resonance parameters are extracted for s-wave resonances. Significant positive correlations are found between gamma-n-0 and gamma-gamma for all isotopes. The magnitude of the observed correlation coefficient, particularly for 142Nd (rho = 0.9), cannot be explained in terms of valence neutron capture and additional mechanisms are discussed. The average s-wave radiative widths for the odd-A isotopes are markedly greater than for the even-A isotopes, while the p-wave radiative width for 142Nd is considerably less than the s-wave width. (author)
Primary Subject
Source
Jan 1977; 47 p; ISBN 0 642 99769 1; 

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Report
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ALPHA DECAY RADIOISOTOPES, BARYON REACTIONS, ENERGY LEVELS, ENERGY RANGE, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, FUNCTIONS, HADRON REACTIONS, INTERMEDIATE MASS NUCLEI, ISOTOPES, MATHEMATICS, NEODYMIUM ISOTOPES, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, PARTIAL WAVES, RADIOISOTOPES, RARE EARTH NUCLEI, STABLE ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Fontana, M.P.; Maisano, G.; Migliardo, P.; Bellissent-Funel, M.C.; Dianoux, A.J.
CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)1984
CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)1984
AbstractAbstract
[en] In this paper we report the results of a comprehensive investigation on the low (ω < or approximately 400 cm-1) and very low (0.2 cm-1 < or approximately ω < or approximately 40 cm-1) frequency vibrational and structural dynamics in water and aqueous solutions of ZnCl2 (for concentrations up to saturation). Time-of-flight inelastic neutron scattering and Raman spectroscopy were used to obtain the vibrational frequency distributions and the frequency dependence of the Raman electron vibration coupling function. Structural relaxation times were determined by depolarized Rayleigh wing scattering. The results, which confirm that these systems are best viewed as ''locally amorphous solids'', are discussed in terms of locally ordered, dynamically correlated patches in which structure and dynamics are strongly influenced by the solute, especially by its action on the water hydrogen bond
Primary Subject
Source
Apr 1984; 10 p; Workshop on structure and dynamics of water and aqueous solutions anomalies and their possible implications in biology; Grenoble (France); 16-18 Apr 1984
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Report
Literature Type
Conference
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BARYONS, CHLORIDES, CHLORINE COMPOUNDS, DISPERSIONS, ELEMENTARY PARTICLES, ENERGY LEVELS, ENERGY RANGE, EXCITED STATES, FERMIONS, HADRONS, HALIDES, HALOGEN COMPOUNDS, HOMOGENEOUS MIXTURES, HYDROGEN COMPOUNDS, MIXTURES, NUCLEAR REACTIONS, NUCLEONS, OXYGEN COMPOUNDS, SCATTERING, SOLUTIONS, ZINC COMPOUNDS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Two-level model to calculate transmission functionals and self-shielding factors for fissile nuclides in the unresolved resonance region is presented. To similate quasi-resonance cross section structure, average resonance parameters, statistical parameter distributions and gaussian low order quadratare formulae are employed. Theoretical predictions and experimental data for 239Pu are compared
Original Title
O vychislenii reaktornykh funktsionalov v oblasti nerazreshennykh rezonansov dlya delyashchikhsya yader
Primary Subject
Source
Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Moscow; AN SSSR, Moscow; AN Ukrainskoj SSR, Kiev; AN Ukrainskoj SSR, Kiev. Inst. Yadernykh Issledovanij; Tsentral'nyj Nauchno-Issledovatel'skij Inst. Informatsii i Tekhniko-Ehkonomicheskikh Issledovanij po Atomnoj Nauke i Tekhnike, Moscow (USSR); p. 124-128; 1984; p. 124-128; 6. All-union conference on neutron physics; Kiev (Ukrainian SSR); 2-6 Oct 1983; 5 refs.; 1 fig.; 2 tabs.
Record Type
Miscellaneous
Literature Type
Conference; Numerical Data
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Pivovarov, V.A.
Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Obninsk. Fiziko-Ehnergeticheskij Inst1983
Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Obninsk. Fiziko-Ehnergeticheskij Inst1983
AbstractAbstract
[en] Results of developing a technique of subgroup solution of transition equation in media with a strong resonance cross section structure, are presented. The subgroup approach permits to take into account the spatial dependence of selfscreening of group cross sections which is mainly vivid in heterogeneous cells close to separation boundaries of physical zones in thick layers of resonance disperser. The solution of this problem has practical value for problems of homogenization of cells and preparation of constants for shielding calculation. It also can be used for methodic investigations in the estimate of errors of the group method
Original Title
Podgruppovoj raschet ploskoparallel'nykh sistem
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1983; 23 p; 24 refs.; 2 figs.
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Report
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