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- Title
PARITY NON-CONSERVATION OBSERVED IN NUCLEAR γ-DECAY OF <sup>180m</sup>Hf.
- Authors
Zakoucky, D.; Stone, J. R.; Goldring, G.; Stone, N. J.; Severijns, J.; Hass, M.; Giles, T.; Koester, U.; Kraev, I. S.; Lakshmi, S.; Lindroos, M.; Wauters, F.
- Abstract
This paper presents results of experiment which studied (using the Nuclear-Orientation technique) the γ-decay of isomeric 180mHf. The described experiment used the newly developed mass-separated 180mHf beam at ISOLDE, CERN which was implanted into an iron foil polarized at millikelvin temperatures. The observed irregular admixture of E2 to M2/E3 multipolarity in 501 keV 8- → 6+ γ-transition was the clear experimental evidence for parity mixing in nuclear states. The temperature dependence of the forward--backward asymmetry of the angular distribution has been measured over extended range of temperatures (and therefore nuclear polarizations), proving a parity mixing of the 8- and 8+ nuclear levels. The value found for the E2/M2 mixing ratio ε = -0.032(2) of this transition is in close agreement with averaged value of all previously published results ε = -0.030(2)
- Subjects
PARITY nonconservation; GAMMA decay; PARTICLE beams; ANGULAR distribution (Nuclear physics); NUCLEAR physics
- Publication
Acta Physica Polonica B, 2008, Vol 39, Issue 2, p411
- ISSN
0587-4254
- Publication type
Article