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Author McDermott, M. N. ♦ Novick, R. ♦ Perry, B. W. ♦ Saloman, E. B.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ANGULAR MOMENTUM ♦ ATOMS ♦ CADMIUM 109 ♦ CADMIUM 114 ♦ CADMIUM 115 ♦ CONFIGURATION ♦ ELECTRIC MOMENTS ♦ ELECTROMAGNETIC FIELDS ♦ ENERGY LEVELS ♦ GAMMA RADIATION ♦ HALF-LIFE ♦ HYPERFINE STRUCTURE ♦ INTERACTIONS ♦ ISOMERS ♦ MAGNETIC FIELDS ♦ MAGNETIC MOMENTS ♦ MIXING ♦ MOMENTUM ♦ NEUTRONS ♦ NUCLEAR REACTIONS ♦ NUCLEAR STRUCTURE ♦ RESONANCE ♦ SPECTRA ♦ SPIN ♦ ZEEMAN EFFECT
Abstract The Zeeman structure and hfs in the (5s5p)/sup 3/P/sub 1/ state of 2.3- day Cd/sup 115/ and 43-day Cd/sup 115m/ were determined by the optical double- resonance technique. The nuclear spin I, magnetic dipole coupling constant A, and electric quadrupole coupling constant B, are: I(115) = 1/2, A(115) = -4484(2) Mc; I(115m) = 11/2, A(1l5m) = -657.6(6) Mc, B(115m) = +131(6) Mc. lf nuclear structure and quadrupole shielding effects are neglected, the corresponding nuclear moments are: mu (115) = --0.6469(3) mu /sub n/, mu (115m) = Cd/sup 115m/ and Cd/sup 109/ quadrupole moments is Q(115m)/Q(109) = tions. The Cd/sup 115/ nuclear moment is compared with the moment predicted for a (3s?sub 1/2/)/sup 1/ (1h/sub 11/2/)sub 2/ neutron assignme nt with configuration mixing. The Cd/sup 115m/- moment is compared with the moments predicted for both a (3s/sub 1/2/)/sup 0/(1h/sub 11/2/)su p 3/ and a (3s/sub 1/2/)/sup 2/(1h/sub 11/2/)/sup 1/ assignment. Both isomers were pr oduced by (n, gamma ) reactions on Cd/sup 114/. The longer-lived isomer, 43-day Cd/sup 115m/, was separated from the Cd/sup 114/ with an electromagnetic mass separator; about 10/sup 11/ atoms were obtained in the resonance cell. No mass separation was performed on the Cd/sup 115/, but it was identified from the decay of the resonances over a 6-day period. The half life deduced from the observed decay is T/sub 1/2/ = 41(7) h, as compared with the accepted value of 56 h. (auth)
ISSN 0031899X
Educational Use Research
Learning Resource Type Article
Publisher Date 1964-04-13
Publisher Department Columbia Univ., New York
Journal Physical Review
Volume Number 134
Organization Columbia Univ., New York


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