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AbstractAbstract
No abstract available
Primary Subject
Source
Symposium on nuclear physics with cyclotrons and tandems; Louvain-la-Neuve, Belgium; 27 May 1974
Record Type
Journal Article
Literature Type
Conference
Journal
J. Phys. (Paris), Colloq; (no.5); p. 61-65
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Hussein, A.H.
Alberta Univ., Edmonton (Canada)1976
Alberta Univ., Edmonton (Canada)1976
AbstractAbstract
[en] A facility for the production of 10 MeV polarized neutrons was designed and built. Neutron polarization and cross section can be measured over an angular range of 2-100 deg. This facility has been used to measure the polarization and cross section of 10 MeV neutrons scattered from Pb and Bi in an angular range of 1.5 to 65 deg. For small angles no significant difference was found in the results for Pb and Bi. DWBA calculations using only the nuclear and Mott-Schwinger ineractions give good agreement with the data. Comparison of the experimental results with predictions using three different global optical potentials proved that the Becchetti and Greenlees potential can best describe both the differential cross section and polarization in the scattering of 10 MeV neutrons from heavy elements. (LL)
Primary Subject
Source
1976; 181 p; Available in microfiche from Canadian Theses Div., National Library of Canada; Thesis (Ph.D.).
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
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AbstractAbstract
[en] In view of the importance of the equivalence between the prior-interaction and post-interaction forms for the validity of distorted-wave Born-approximation (DWBA) studies in reactive scattering, we present a comparison study between the two forms by illustrating a reactive atom--diatomic-molecule system. Our DWBA method presented earlier is found to satisfy the condition of the equivalence remarkably well
Primary Subject
Record Type
Journal Article
Journal
Phys. Rev., A; ISSN 0556-2791;
; v. 25(4); p. 2385-2387

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Larson, Jonas, E-mail: jolarson@fysik.su.se2013
AbstractAbstract
[en] I revisit a longstanding question in quantum optics; when is the rotating wave approximation justified? In terms of the Jaynes–Cummings and Rabi models I demonstrate that the approximation in general breaks down in the adiabatic limit regardless of system parameters. This is explicitly shown by comparing Berry phases of the two models, where it is found that this geometrical phase is strictly zero in the Rabi model contrary to the non-trivial Berry phase of the Jaynes–Cummings model. The source of this surprising result is traced back to different topologies in the two models. (paper)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/0031-8949/2013/T153/014040; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Physica Scripta (Online); ISSN 1402-4896;
; v. 2013(T153); [6 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
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Vanderpoorten, R.; Winters, K.H.
International conference on the physics of electronic and atomic collisions. 10th. Paris, 21-27 July 19771977
International conference on the physics of electronic and atomic collisions. 10th. Paris, 21-27 July 19771977
AbstractAbstract
No abstract available
Primary Subject
Source
CEA, 75 - Paris (France); v. 1 p. 435; ISBN 2-7272-0020-X;
; 1977; v. 1 p. 435; Commissariat a l'Energie Atomique; Paris, France; 10. International conference on the physics of electronic and atomic collisions (ICPEAC); Paris, France; 21 - 27 Jul 1977; Books of abstracts commercially available from North-Holland, Amsterdam, the Netherlands; Published in abstract form only.

Record Type
Book
Literature Type
Conference
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AbstractAbstract
[en] The theory of Faddev/AGS few body reaction frameworks is presented. A comparison with other reaction formalisms (DWBA, CDCC) is made. Sucesses and shortcomings of the scattering approaches for breakup are analysed. Some set of calculated reaction observales for resonant and nonresonant breakup are presented to obtain insight into the physics incorporated on the scattering approaches.
Primary Subject
Source
18. international school on nuclear physics, neutron physics and applications; Varna (Bulgaria); 21-27 Sep 2009; Available from http://dx.doi.org/10.1088/1742-6596/205/1/012016; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Journal of Physics. Conference Series (Online); ISSN 1742-6596;
; v. 205(1); [8 p.]

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AbstractAbstract
[en] The formalism for using nonspherical potentials within the framework of a first-order distorted-wave approximation was presented recently by Madison, Bartschat, and Peacher. They investigated the electron-impact excitation of the of hydrogen. The standard approach with the 2p state as the excited state leads to a nonspherical quadrupole potential. Their results indicated that the effects of this nonspherical quadrupole distortion were negligible for all practical purposes. However, the 2s state of hydrogen interacts strongly with the 2p state. Thus we have considered using the Stark states to represent the excited atomic states. This leads to a nonspherical dipole distortion in the final-state potential. First-order distorted-wave results will be presented for a range of energies
Primary Subject
Secondary Subject
Source
1993 American Physical Society annual meeting on atomic, molecular, and topical physics; Reno, NV (United States); 16-19 May 1993; CONF-9305421--
Record Type
Journal Article
Literature Type
Conference
Journal
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Satchler, G.R.
Oak Ridge National Lab., Tenn. (USA)1973
Oak Ridge National Lab., Tenn. (USA)1973
AbstractAbstract
No abstract available
Primary Subject
Source
1973; 15 p; Symposium on heavy-ion transfer reactions; Argonne, Illinois, USA; 15 Mar 1973
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Campeanu, R.I., E-mail: campeanu@yorku.ca2012
AbstractAbstract
[en] The electron capture to the continuum phenomenon in positron impact ionization of helium is studied with the DWBA approximation. Our DWBA-WM model produces results which are in better agreement with the experiment than the more elaborate 3C model.
Primary Subject
Source
S0168-583X(12)00053-5; Available from http://dx.doi.org/10.1016/j.nimb.2012.01.030; Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms; ISSN 0168-583X;
; CODEN NIMBEU; v. 276; p. 30-32

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AbstractAbstract
[en] It is demonstrated by extensive calculational experiments that the volume-absorptive optical potential conventionally employed for the triton has a singular property when it is used in the zero-range DWBA calculation of the (p,tsub(o)) angular distribution, in contrast with the surface-absorptive optical potential. Implications of this fact are discussed. (author)
Primary Subject
Record Type
Journal Article
Journal
Lettere al Nuovo Cimento; ISSN 0024-1318;
; v. 26(5); p. 143-148

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