α decay of 225Ra
Abstract
Alpha decay from 225Ra has been observed for the first time. 5006+/-5 keV and 4976+/-5 keV alphas with intensities 2.0+/-0.5×10-5 and 6+/-3×10-6 and alpha decay hindrance factors 40+/-10 and 70+/-35, respectively, are reported. The corresponding levels in 221Rn are the ground state (72+) and 30+/-10 keV excited state (tentatively 32+) with the octupole deformed configurations 32(-0.1 0.6) mixed with 12(-0.1 0.5 -2).
- Publication:
-
Physical Review C
- Pub Date:
- October 2000
- DOI:
- 10.1103/PhysRevC.62.047303
- Bibcode:
- 2000PhRvC..62d7303L
- Keywords:
-
- 23.60.+e;
- 21.60.Ev;
- 27.90.+b;
- Alpha decay;
- Collective models;
- 220<
- =A