Filters
Results 1 - 10 of 248
Results 1 - 10 of 248.
Search took: 0.032 seconds
Sort by: date | relevance |
Mitchell, G.E.
North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics. Funding organisation: USDOE, Washington, DC (United States)1992
North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics. Funding organisation: USDOE, Washington, DC (United States)1992
AbstractAbstract
[en] Studies of fundamental symmetries by the TRIPLE collaboration using the unique capabilities at LAMTF have found unexpected systematics in the parity-violating amplitudes for epithermal-neutron scattering. Tests to lower the present limits on time-reversal-invariance violation in the strong interaction are being made at in experiments on the scattering of polarized fast neutrons from aligned holmium targets. Studies of few-nucleon systems have received increasing emphasis over the past year, involving a broad program for testing the low- to medium-energy internucleon interactions, from the tensor component in n-p scattering and the n-n scattering lengths, through three-nucleon systems and the alpha particle, on up to 8Be. Of particular interest are three-nucleon systems, both in elastic scattering and in three-body breakup. Beam requirements range from production of intense and highly-polarized neutron beams to tensor-polarized beams for measurements at both very low energies (25--80 keV) and at tandem energies for definitive measurements of D-state components of the triton, 3He, and 4He obtained from transfer reactions. The program in nuclear astrophysics expanded during 1991--1992. Several facets of the nuclear many-body problem and of excitation mechanisms of the nucleus are being elucidated, including measurements and analyses to elucidate the neutron--nucleus elastic-scattering interaction over a wide range of nuclei and energies. Several projects involved developments in electronuclear physics, instrumentation, rf-transition units, and low-temperature bolometric particle detectors
Primary Subject
Source
1 Oct 1992; 199 p; CONTRACT FG05-88ER40441; AC05-76ER01067; FG05-88ER40442; OSTI as DE93009756; NTIS; INIS; US Govt. Printing Office Dep
Record Type
Report
Literature Type
Numerical Data; Progress Report
Report Number
Country of publication
ASTROPHYSICS, D STATES, ELASTIC SCATTERING, EPITHERMAL NEUTRONS, EXPERIMENTAL DATA, HELIUM 3, HELIUM 4, MANY-BODY PROBLEM, NEUTRON REACTIONS, NUCLEAR STRUCTURE, NUCLEON-NUCLEON INTERACTIONS, POLARIZED BEAMS, PROGRESS REPORT, RESEARCH PROGRAMS, RF SYSTEMS, SCATTERING AMPLITUDES, T INVARIANCE, TRITONS
AMPLITUDES, BARYON REACTIONS, BARYON-BARYON INTERACTIONS, BARYONS, BEAMS, CHARGED PARTICLES, DATA, DOCUMENT TYPES, ELEMENTARY PARTICLES, ENERGY LEVELS, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, FERMIONS, HADRON REACTIONS, HADRON-HADRON INTERACTIONS, HADRONS, HELIUM ISOTOPES, INFORMATION, INTERACTIONS, INVARIANCE PRINCIPLES, ISOTOPES, LIGHT NUCLEI, NEUTRONS, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, NUCLEONS, NUMERICAL DATA, PARTICLE INTERACTIONS, SCATTERING, STABLE ISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Mitchell, G.E.
Queensland Dept. of Primary Industries, Brisbane (Australia)1986
Queensland Dept. of Primary Industries, Brisbane (Australia)1986
AbstractAbstract
[en] The report covers the Seminar for Asia and the Pacific on the practical application of food irradiation. The seminar assessed the practical application of food irradiation processes, commercial utilisation and international trade of irradiated food
Primary Subject
Source
1986; 27 p; Queensland Dept. of Primary Industries; Brisbane (Australia); Conference and Workshop Series QC86010.
Record Type
Miscellaneous
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
Davidson, J.P. (ed.); p. 163-191; 1973; University Press of Kentucky; Lexington, KY; 5. symposium on the structure of low medium mass nuclei; Lexington, Kentucky, USA; 27 Oct 1972
Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] In light of the recent TRIPLE results showing large parity-nonconserving (PNC) effects in epithermal neutron resonances in heavy nuclei, we have examined the possibility of studying parity violation via (p,α) resonance reactions in s-d shell nuclei, Such measurements could complement the neutron studies by providing the first determination of Vrms, (the rms PNC matrix element) in lighter nuclei. We have used experimental resonance parameters to estimate the magnitude of expected effects. We find that a segmented detector with large solid-angle could yield a sufficient count rate without significantly reducing the large angular effects which are often present. We shall also discuss the issue of data analysis; an analysis similar to that of the neutron work is appropriate, but some of the approximations used in the neutron analysis often are not suitable for proton resonances
Primary Subject
Secondary Subject
Source
Fall meeting of the Division of Nuclear Physics of the American Physical Society; Bloomington, IN (United States); 25-28 Oct 1995; CONF-9510116--
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Varabioff, Y.; Mitchell, G.E.; Nottingham, S.M.
International Food Institute of Queensland, Hamilton (Australia); Rijksuniversiteit, Gent (Belgium)1992
International Food Institute of Queensland, Hamilton (Australia); Rijksuniversiteit, Gent (Belgium)1992
AbstractAbstract
[en] After irradiation of chickens to a dose of 2.5 kGy, the decrease in the standard plate count (SPC) was similar in air and in vacuum-packaged chickens. During storage at 4 degrees C for 15 d, the SPC increased progressively in both types of packaged chickens. At the end of the storage period, the SPC was higher in air-packaged chicken than in vacuum-packaged chickens. In irradiated chickens, Listeria monocytogenes was only recovered from the vacuum-packaged chickens after 7 d cold storage. In unirradiated chickens, L. monocytogenes proliferated similarly in both air- and vacuum-packaged chickens
Primary Subject
Source
ARN: US19920100466; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Journal of Food Protection; ISSN 0362-028X;
; v. 55(5); p. 389-391

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The effect of isospin symmetry breaking on level statistics has been examined with the nuclear shell model. The eigenvalues and electromagnetic transitions were calculated with the program OXBASH for the nuclide 26Al for conserved isospin and for broken isospin. The long-range correlations of the eigenvalues, as measured by Δ3, show good agreement between the experimental results and the calculations. However, there are discrepancies between data and calculations for the short-range correlations of the eigenvalues
Primary Subject
Source
S0370269304003776; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Recent studies have shown large parity-nonconserving (PNC) effects in epithermal neutron resonances in heavy nuclei. Analysis of these data treats the system as chaotic and the PNC matrix elements as random. The initial goal of such measurements is to determine Vrms. PNC measurements at resonances in lighter nuclei could provide additional information on Vrms and also study of a possible mass dependence of Vrms. To examine the feasibility of studying parity violation at proton resonances in nuclei in the A=20-40 region, calculations are being performed using measured resonance parameters. Relative merits of charged particle resonances for symmetry-breaking studies will be discussed, and preliminary results will be presented
Primary Subject
Secondary Subject
Source
1993 joint meeting of the American Physical Society and the American Association of Physics Teachers; Washington, DC (United States); 12-15 Apr 1993; CONF-9304297--
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Recent studies have shown large parity-nonconserving (PNC) effects in epithermal neutron resonances in heavy nuclei. We have used experimental resonance parameters to examine the possibility of measuring parity violation via proton-induced resonance reactions in s-d shell nuclei. Such measurements could complement the neutron studies by providing the first determination of Vrms (the rms PNC matrix element) in lighter nuclei. Our results show that PNC components of analyzing powers are extremely sensitive to energy, angle, and resonance parameters; large enhancements are sometimes observed. These results will be discussed with emphasis on a figure-of-merit which allows comparison of different resonance pairs
Primary Subject
Secondary Subject
Source
Fall meeting of the Division of Nuclear Physics of the American Physical Society; Pacific Grove, CA (United States); 20-23 Oct 1993; CONF-931044--
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] High resolution proton resonance measurements are of great value in the study of statistical and non-statistical effects involving compound nuclear resonances. First, these measurements provide valuable information on both global and local properties of widths and spacings. This information is a valuable supplement to that obtained from neutron experiments. Second, as Mahaux and Weidenmueller summarize: Isobaric analog resonances provide the best understood examples of doorway states. They are thus well suited for an experimental check of the theory. Third, the measurement of channel spin interference effects provide the most sensitive test yet for certain aspects of statistical theories, as well as providing examples of new types of intermediate structure. Examples are discussed
Primary Subject
Source
Dalton, B.J.; Grimes, S.M.; Vary, J.P.; Williams, S.A. (eds.); p. 33-60; 1980; p. 33-60; Plenum Press; New York, NY; Conference on theory and applications of moment methods in many fermion systems; Iowa City, IA (USA); 10 - 13 Sep 1979
Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Mitchell, G.E.; Wimpey, J.F.; Bilpuch, E.G.; Peters, W.C.
Photonuclear reactions and applications1973
Photonuclear reactions and applications1973
AbstractAbstract
No abstract available
Primary Subject
Source
Berman, B.L. (ed.); California Univ., Livermore (USA). Lawrence Livermore Lab; p. 297-298; 1973
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |