ANGULAR CORRELATIONS OF GAMMA-GAMMA CASCADES IN Pb$sup 20$$sup 8$
Journal Article
·
· Soc. Sci. Fennica, Commentationes Phys.-Math.
OSTI ID:4818030
By measuring gamma singles and coincidence spectra from Th/sup 228/ (RdTh) with scintillation detectors, the commonly accepted level scheme of Pb/sup 208/ was verified within the limits of the measurements. Measurements of the relative intensities of the gamma rays largely agree with previous investigations. Angular correlation measurements yield delta =-0.06 plus or minus 0.05, delta / being the mixing ratio I(E2)/ I(M1), for the 511 kev gamma transition in Pb/sup 208/. The angular correlation of the 763 kev - (583 kev) - 2615 kev cascade in Pb/sup 208/ was measured, and it was confirmed that the 3961 kev level has spin 6- and that the 763 kev gamma ray is a M1 + E2 mixture with delta =- 0.45 plus or minus 0.15. Furthermore, the angular correlation measurements verify that the levels at 2615, 3198, 3475, and 3709 kev have spins 3/sup -/, 5/ sup -/, 4/sup -/, and 5/sup -/ in this order, that the 2615 and 583 kev transitions are pure E3 and E2 radiations respectively, and that the 860 kev transition is almost M1 radiation with delta = -0.023 plus or minus 0.010. (auth)
- Research Organization:
- Univ. of Helsinki
- NSA Number:
- NSA-16-002550
- OSTI ID:
- 4818030
- Journal Information:
- Soc. Sci. Fennica, Commentationes Phys.-Math., Journal Name: Soc. Sci. Fennica, Commentationes Phys.-Math. Vol. Vol: 26: No. 6
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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