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Author Lieber, A. ♦ Whitten, C. A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ANGULAR DISTRIBUTION ♦ COINCIDENCE METHODS ♦ CROSS SECTIONS ♦ CRYSTAL COUNTERS ♦ ENERGY LEVELS ♦ EXCITATION ♦ GADOLINIUM 156 ♦ HOLMIUM 165 ♦ NUCLEAR REACTIONS ♦ PARITY ♦ PROTON BEAMS ♦ RESOLUTION ♦ ROTATION ♦ SCATTERING ♦ SPIN
Abstract Elastic and inelastic scattering of 17.5-Mev protons by the low-lying rotational levels of holmium-165 and gadolinium-156 was studied using a telescopic array of solidstate detectors with a resolution of about 60 kev. Angular distributions were obtained for the ground state (7/2/sup -/), first excited state (9/2/sup -/), and second excited state (11/2/sup -/) of holmium- 165, and the ground state (0/sup +/), first excited state (2/sup +/), and second excited state (4/sup +/) of gadolinium-156. The cross section for the first excited state of Ho/sup 165/ is an order of magnitude below that of the ground state. The ratio of the first excited state of Ho/sup 165/ to that of the second does not agree with the prediction given by first-order direct reaction theory. There is some evidence that the third-excited state of Gd/sup 156/ (6/sup +/) is weakly excited by 17.5-Mev protons. (auth)
ISSN 0031899X
Educational Use Research
Learning Resource Type Article
Publisher Date 1963-12-15
Publisher Department Princeton Univ., N.J.
Journal Physical Review
Volume Number 132
Technical Publication No. PUC-1963-111
Organization Princeton Univ., N.J.


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