Nuclear spectroscopic investigations of the structure of $sup 215$Po and $sup 219$Rn

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1971

OSTI ID:4379429

Ley, L

Thesis. The lifetimes of the 272- and the 402-keV levels in polonium- 215 were measured with the following results: T/sub 1/2/ (272) = (195 plus or minus 15) X 10/sup -12/ sec and T/sub 1/2/ (402) = (66 plus or minus 11) x 10/ sup -12/ sec. The thus d erived M1 and E2 transition probabilities can be explained within the framework of the core excitation model. For Rn 219, the multipolarity was determined from the measured conversion electron spectra, which results in the necessity of revising all spin excited states determined so far. The measured lifetimes in Rn 219 are: 14.4 keV:T/sub 1/2/ = (87530) x 10/sup -12/ sec and 4.4 keV: T/sub 1/2/ = (1.541.3) x 10/sup -9/ sec and imply collective properties of these nuclear states. (GE)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-29-006553
• OSTI ID: 4379429
• Country of Publication: Germany
• Language: German

Related Subjects

*POLONIUM 215-- ENERGY LEVELS
*RADON 219-- ENERGY LEVELS
BETA SPECTRA
COLLECTIVE MODEL
ELECTRIC MOMENTS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
INTERNAL CONVERSION
LIFETIME
MAGNETIC DIPOLE MOMENTS
MULTIPOLARITY
N68931* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
190 <= A <= 219--Energy Levels & Transitions
QUADRUPOLE MOMENTS
SPIN