91-Pa-231
basic
n-XS summary
XS graphs
element
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91-protactinium-231
- Atomic Mass: 231.0358789 +- 0.0000028 amu
- Excess Mass: 33420.973 +- 2.586 keV
- Binding Energy: 1759860.436 +- 2.605 keV
- Beta Decay Energy: B- -382.155 +- 3.220 keV
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra,
Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
- Spin: 3/2-
- Half life: 32760 years
- Mode of decay: Alpha to Ac-227
- Mode of decay: 24NEC
- Mode of decay: SF
- Possible parent nuclides:
- Beta from Th-231
- Electron capture from U-231
- Alpha from Np-235
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)
Magnetic Dipole Moments and Electric Quadrupole Moments
Ex(kev) | T1/2 | Spin | | m(nm) | | Q(b) | | Ref. Std. | Method | Reference |
0 | 3.3x10*4y | (2-) | | 2.01(2) | | | | | ENDOR | PR 121 1630 (61) |
84 | 44 ns | 5/2+ | | | | +0.7(2) | | [231Pa] | ME | PL 69A 225 (78) |
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N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published. 2000 Courtesy of T. Burrows at BNL/NNDC.
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