Publication Date

1973

Document Type

Dissertation/Thesis

First Advisor

Bushnell, David L.

Degree Name

M.S. (Master of Science)

Department

Department of Physics

LCSH

Tungsten--Isotopes

Abstract

Primary gamma-ray transitions of ¹??W following thermal neutron capture in ¹?³W were examined using an annihilation-pair spectrometer. Energies and intensities of gamma-ray transitions in the 5 MeV - 7.5 MeV range were determined. The detection system consisted of a Ge(Li) detector placed in the center of a large annular NaI(T1) scintillator which is split into four optically independent quadrants. Threefold coincidence between the Ge(Li) detector and two opposite quadrants of the NaI(T1) annulus produced a high quality simplified spectrum. A level scheme is proposed with new levels at 1893.9, 1908.2, 1996.6, 2031.3, 2201.6, 2228.7, 2270.1, 2321.1, 2333.2, 2352.8, and 2390.9 keV.

Comments

Includes bibliographical references.||Includes illustrations.

Extent

26 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

Share

COinS