Nuclear Data Sheets for A = 216
Nuclear structure information for all nuclei with mass number A = 216 is summarized. Evaluated data and the adopted levels and spin and parity assignments are given. Only the alpha-decay mode has been observed for all nuclei in this mass chain. Possible epsilon-capture and/or beta-decay are expected to be quite weak for most of them. An upper limit of 0.6 percent was set by 68Va18 for sup 216Th epsilon-decay from alpha-yields. The compilers estimate any epsilon-capture decay from ^ 216At to ^216Po to be less than 1.5 x 10^6 percent; similarly, beta-decay from ^216At to ^ 216Rn ground state is expected to be less than 0.0004 percent, and allowed beta^- to any yet unobserved level in ^216Rn can be estimated to be less than 0.005 percent from expected log ft values. Level scheme information for all nuclei is from alpha-decays of their parents with A = 220. alpha-parents are shown on the drawings above their daughters. alpha-decay data are given as much as possible on the drawings. For data with uncertainties and references, see A = 220 compilation in this issue. (auth)
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- US Atomic Energy Commission (AEC)
- NSA Number:
- NSA-33-027719
- OSTI ID:
- 4094011
- Journal Information:
- Nucl. Data Sheets, Vol. 17, Issue 3; Other Information: Orig. Receipt Date: 30-JUN-76
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nuclear Data Sheets for A = 220
Nuclear data sheets for A = 149
Related Subjects
*ACTINIUM 216- ENERGY-LEVEL TRANSITIONS
*ASTATINE 216- ENERGY- LEVEL TRANSITIONS
*FRANCIUM 216- ENERGY-LEVEL TRANSITIONS
*POLONIUM 216- ENERGY-LEVEL TRANSITIONS
*PROTACTINIUM 216- ENERGY-LEVEL TRANSITIONS
*RADIUM 216- ENERGY-LEVEL TRANSITIONS
*RADON- ENERGY-LEVEL TRANSITIONS
*THORIUM 216- ENERGY-LEVEL TRANSITIONS
ENERGY LEVELS
LIFETIME
NUCLEAR DATA COLLECTIONS
PARITY
Q-VALUE
SPIN
NNDC