STUDY OF THE CADMIUM ISOTOPES. I. BETA AND GAMMA RAY SPECTROSCOPY OF Ag$sup 110$m

Journal Article · Sun Apr 01 04:00:00 EST 1962 · Nuclear Phys.

DOI:https://doi.org/10.1016/0029-5582(62)90316-4· OSTI ID:4828113

Katoh, T; Yoshizawa, Y

Using a beta-ray spectrometer and scintillation spectrometers, beta and gamma from the decay of Ag/sup 110m/ (250 d) were studied. The maximum energies of the four beta rays were 0.53, 1.4, 2.18, and 2.87 Mev from the beta-ray spectrum. A beta ray having a maximum energy of about 0.084 Mev was observed, but the maximum energy could not be determined accurately because of the counter window absorption and the existence of the isomeric transition. From the internal conversion electron spectrum, 15 gamma rays were detected and the transition energies were 0.115, 0.676 and the 0.688-Mev gamma were found. These new gamma rays save the discrepancies among the gamma-ray intensities. Multipolarities of the gamma were assigned, comparing the measured K/(L + M) ratios and the K-shell internal conversion coefficients with the theoretical values. Considering Ritz's law (the energy rule), Kirchhoff's law (the intensity rule), the cascade relation (the coincidence and the summing peak methods), and selection rule (the beta-ray forbiddenness and gamma-ray multipolarity), a decay scheme was proposed. The spins and parities of levels, relative intensities of gamma, and log ft of beta rays were discussed from the viewpoint of nuclear structure. The spins of the levels of the second excited group were 2+ and 4+, and the energy ratios of these levels and the first excited level were about 2.3. These facts support the vibrational model. The higher excited states of Cd/sup 110/ and the energy and the multipolarity of the isomeric transition of Ag/sup 110m/ are discussed. (auth)

• Research Organization: Osaka Univ.
• NSA Number: NSA-16-021380
• OSTI ID: 4828113
• Journal Information: Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 32
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
BETA DECAY
BETA PARTICLES
BETA SPECTROMETERS
CADMIUM ISOTOPES
CASCADE SHOWERS
COSMIC RADIATION
DECAY
EMISSION
ENERGY LEVELS
GAMMA RADIATION
ISOMERIC TRANSITION
ISOMERS
KIRCHHOFF RADIATION LAW
MATHEMATICS
MULTIPOLARITY
MULTIPOLES
PARITY
PHOSPHORS
PHYSICS
QUANTUM MECHANICS
RITZ METHOD
SELECTION RULES
SHOWERS
SILVER 110
SPECTRA
SPECTROSCOPY
SPIN
TEMPERATURE
THERMAL RADIATION
TRANSIENTS
WINDOWS