ZERO-SPIN ASSIGNMENT FOR THE 2.05-Mev STATE OF Ni$sup 62$ FROM A (p,p'$gamma$$-$$gamma$) ANGULAR CORRELATION MEASUREMENT

Journal Article · Mon Jul 01 04:00:00 EDT 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.131.318· OSTI ID:4720845

Sen Gupta, A K; van Patter, D M

The - angular correlation of the 0.88-- 1.17-Mev cascade, following excitation of the 2.05-Mev state of Ni/sup 62/ by the (p,p') reaction, was measured for angular separations of 90 to 180 c- at an average bombarding energy of 4.71 Mev. Convincing agreement was found with the correlation expected for a 0(Q)2(Q)0 cascade, thereby providing a unigue zero- spin assignment for the second level of Ni/sup 62/. This assignment accounts for the measured isotropy of the 0.88Mev cascade transition with respect to the incident beam, as well as the lack of an observed ground-state transition. While a 2/sup +/ spin would be expected for the second level according to level systematics for neighboring even-even nuclei, a spin of zero can be accommodated by the recent theoretical predictions of Kerman and Shakin. Other evidence relating to the spin assignments and possible twophonon character of the well- separated triplet of states in Ni/sup 62/ is discussed. It is concluded that the measurement of a 0(Q)2(Q)0 - angular correlation following (p,p') excitation provides a promising method for the unique identification of zero-spin states in medium-weight even-even nuclei. (auth)

• Research Organization: Franklin Inst., Swarthmore, Penna.
• NSA Number: NSA-17-026589
• OSTI ID: 4720845
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 131; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CASCADES
ENERGY LEVELS
ENERGY RANGE
EXCITATION
EXTRACTION COLUMNS
GAMMA RADIATION
MEASURED VALUES
NICKEL 62
NUCLEAR REACTIONS
NUCLEI
PHYSICS
PROTONS
SCATTERING
SPIN
TRANSITIONS