Correlated Two-Photon Lines from 6-MeV/nucleon U+ Th, U+ U, and Th+ Th Collisions

verfasst von

K. Danzmann, W. E. Meyerhof, E. C. Montenegro, E. Dillard, H. P. Ḧlskötter, N. Guardala, D. W. Spooner, B. Kotlinski, D. Cline, A. Kavka, C. W. Beausang, J. Burde, M. A. Deleplanque, R. M. Diamond, R. J. McDonald, A. O. MacChiavelli, B. S. Rude, F. S. Stephens, J. D. Molitoris

Abstract

We find that narrow lines at 1043 and 1062 keV in the summed-energy, 180°-correlated two-photon spectrum from 6-MeV/nucleon U+Th collisions can be produced by cascades from high-spin states (32+) in U238. We see no evidence for narrow two-photon lines in U+Th, Th+Th, and U+U collisions corresponding to the electron-positron lines seen by others: In the summed-energy region between 1.2 and 2.0 MeV, we set an upper limit for the cross section of 6×10-31 cm2 averaged over a target thickness of 1 mg/cm2.

Externe Organisation(en)

Stanford University
University of Rochester
University of California at Berkeley
Lawrence Livermore National Laboratory

Typ

Artikel

Journal

Physical review letters

Band

62

Seiten

2353-2356

Anzahl der Seiten

4

ISSN

0031-9007

Publikationsdatum

15.05.1989

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Elektronische Version(en)

http://hdl.handle.net/11858/00-001M-0000-0013-5D2C-2 (Zugang: Offen)
https://doi.org/10.1103/PhysRevLett.62.2353 (Zugang: Geschlossen)