Scattering of He3 from He4

Creators: Tombrello, T. A.; Parker, P. D.

Abstract

Doubly charged He3 ions have been scattered from helium gas to permit the investigation of excited states in Be7 at excitation energies between 3.9 and 8.4 MeV. In addition to the known 7/2- level at 4.54 MeV, the 5/2- member of this l=3 spin-orbit doublet has also been observed. This new state is located at an excitation energy of 6.51±0.04 MeV and has a reduced width of 3.96×10^(-13) MeV cm. No positive-parity states are observed in this range of excitation energies. A phase-shift analysis of the data has been made for bombarding energies above 5.75 MeV, and the spin polarization of the scattered particles has been calculated. Several regions in the θc.m., EHe3 plane were found that should yield polarizations near unity.

Additional Information

©1963 The American Physical Society. Received 19 December 1962. The authors wish to acknowledge fellowship aid from the National Science Foundation during the course of this work. We also wish to thank Professor T. Lauritsen, Professor C. A. Barnes, and A. D. Bacher for their help in taking the data, and Mrs. Barbara Hinds and D. Papanastossiou for help with the data reduction. The help given by Dr. A. C. L. Barnard in allowing us to see the Rice data and phase-shift analysis prior to publication is greatly appreciated. Supported in part by the Joint Program of the Office of Naval Research and the U.S. Atomic Energy Commission.

Files

TOMpr63b.pdf

Files (1.1 MB)

Name	Size	Download all
TOMpr63b.pdf md5:f64ccaa4a0ce8733614ca1fcc1625cfd	1.1 MB	Preview Download

Additional details

	All versions	This version
Views	0	0
Downloads	0	0
Data volume	0 Bytes	0 Bytes