TRIPLE ISOMERISM IN Ir$sup 19$$sup 2$

Journal Article · Wed Jul 01 04:00:00 EDT 1959 · Phys. Rev. Letters

DOI:https://doi.org/10.1103/PhysRevLett.3.47· OSTI ID:4258450

Scharff-Goldhaber, G; McKeown, M

In studying an iridium specimen irradiated for one month in the BNL Reactor and then allowed to cool, a gamma spectrum identical with Ir/sup 192g/ was obtained, but corresponding to a source strength of 2820 plus or minus 140 disintegrations per sec. As Ir/sup 192/ g is known to have a 1.45minute isomer, decaying mainly by a 58-kev isomeric (E3) transition to the 74-day ground state, it was concluded that the observed activity stems from a third, longer lived isomer of Ir/sup 192/. Afar various studies on the isomer a lower limit of T 1/2 > 5 yr was set. (W.D.M.)

• Research Organization: Brookhaven National Lab., Upton, N.Y.
• NSA Number: NSA-13-018553
• OSTI ID: 4258450
• Journal Information: Phys. Rev. Letters, Journal Name: Phys. Rev. Letters Vol. Vol: 3
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

DECAY
ENERGY LEVELS
GAMMA RADIATION
HALF-LIFE
IRIDIUM
IRIDIUM 192
IRRADIATION
ISOMERS
MEASURED VALUES
NEUTRONS
PHYSICS AND MATHEMATICS
RADIOACTIVITY
REACTORS
SPECTRA
TRANSIENTS