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Neutron-neutron effective range parameters from the ^3H(^2H, ^3He)2n and ^3He(^2H, ^3H)2p reactions

Larson, H. T. and Bacher, A. D. and Nagatani, K. and Tombrello, T. A. (1970) Neutron-neutron effective range parameters from the ^3H(^2H, ^3He)2n and ^3He(^2H, ^3H)2p reactions. Nuclear Physics A, 149 (1). pp. 161-196. ISSN 0375-9474. https://resolver.caltech.edu/CaltechAUTHORS:20151106-140715417

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Abstract

The energy spectra of ^3H and ^3He nuclei from the ^3He(^2H, ^3H)2p, ^3H(^2H, ^3He)2n, ^3He(2H, 3He)pn and ^3H(^2H, ^3H)pn reactions were measured between 6° and 20° at a bombarding energy of 11 MeV. An upper limit of 5 µb/sr was determined for the cross section for producing a bound di-neutron at 6° and 7.5°. The ^3H(^2H, ^3He)2n and ^3He(^2H, ^3H)2p data together with previous measurements at higher energies have been used to investigate the reliability of information obtained about the two-nucleon system from such three-body final state reactions. As an aid to these investigations, we have made Born approximation calculations employing realistic nucleon-nucleon potentials and an antisymmetrized final state wave function for the five-particle system. These calculations reproduce many of the features observed in the experimental data and indicate that the role of complex exchange processes cannot be ignored. The results show that previous attempts to obtain information on the neutron-neutron effective range parameters from the ^3H(^2H, ^3He)2n reaction may have seriously overestimated the accuracy that could be obtained.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0375-9474(70)90385-4DOIArticle
http://www.sciencedirect.com/science/article/pii/0375947470903854PublisherArticle
Additional Information:© 1970 North-Holland Publishing Co. Received 16 March 1970. Supported in part by the National Science Foundation (GP-91 14) and the Office of Naval Research [Nonr.-220(47)].
Funders:
Funding AgencyGrant Number
NSFGP-9114
Office of Naval Research (ONR)Nonr-220(47)
Subject Keywords:Nuclear reactions
Issue or Number:1
Record Number:CaltechAUTHORS:20151106-140715417
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151106-140715417
Official Citation:H.T. Larson, A.D. Bacher, K. Nagatani, T.A. Tombrello, Neutron-neutron effective range parameters from the 3H(2H, 3He)2n and 3He(2H, 3H)2p reactions, Nuclear Physics A, Volume 149, Issue 1, 22 June 1970, Pages 161-196, ISSN 0375-9474, http://dx.doi.org/10.1016/0375-9474(70)90385-4. (http://www.sciencedirect.com/science/article/pii/0375947470903854)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61962
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:07 Nov 2015 00:05
Last Modified:03 Oct 2019 09:13

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