Search for Correlated Narrow-Peak Structure in the Two-Photon Spectrum from 6-MeV/ Nucleon U+Th Collisions

authored by

W. E. Meyerhof, J. D. Molitoris, K. Danzmann, D. W. Spooner, F. S. Stephens, R. M. Diamond, E. M. Beck, A. Schäfer, B. M̈üller

Abstract

We have searched for 180°(c.m.) correlated equal-energy two-photon decays produced in 6-MeV/nucleon U + Th collisions. In the summed-energy region between 1.5 and 1.8 MeV, we set an upper limit of 3 × 10-10 decay per projectile for the yield integrated over a target thickness of 3.6 mg/cm2, which corresponds to a cross section of 3 × 10-29 cm2 averaged over the target. This can be compared to a production cross section of (1-2) × 10-28 cm2, averaged over a target thickness of 0.3-0.6 mg/cm2 found by others for correlated electron-positron pairs in the same reaction.

External Organisation(s)

Stanford University
University of California at Berkeley
Goethe University Frankfurt

Type

Article

Journal

Physical review letters

Volume

57

Pages

2139-2142

No. of pages

4

ISSN

0031-9007

Publication date

27.10.1986

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Physics and Astronomy

Electronic version(s)

http://hdl.handle.net/11858/00-001M-0000-0013-5DCB-D (Access: Open)
https://doi.org/10.1103/PhysRevLett.57.2139 (Access: Closed)