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The determination of the nuclear quadrupole moments of the 247-keV level of cadmium-111 by measurement of the circular polarization of γ-radiation (in German)

Journal Article · · European Physical Journal. A
DOI:https://doi.org/10.1007/BF01379266· OSTI ID:4823446
The interaction of the nuclear electric quadrupole moment with an electric field gradient at the position of the nucleus changes the angular correlation of two successive gamma rays and also produces a circular polarization of the gamma rays. By measuring this polarization it is possible to distinguish between electric and magnetic attenuation of the gamma cascade. In the electric case this measurement determines not only the absolute value of the interaction product Q x (δ / δ z) but also the sign of it and therefore the sign of the nuclear quadrupole moment. The measurement of the circular polarization of the 247 kev gamma ray of Cd111 is described. A polarization of P = (0.8 plus or minus 0.2)% led to the determination of the quadrupole moment of the first excited state as Q= +0.9 - 10-24 cm2.
Research Organization:
Inst. for Experimental Physics, Hamburg
Sponsoring Organization:
USDOE
NSA Number:
NSA-16-023135
OSTI ID:
4823446
Journal Information:
European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 2 Vol. 168; ISSN 1434-6001
Publisher:
Springer
Country of Publication:
Country unknown/Code not available
Language:
German