85-At-209
basic
element
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85-astatine-209
- Atomic Mass: 208.9861587 +- 0.0000085 amu
- Excess Mass: -12893.106 +- 7.920 keV
- Binding Energy: 1633299.534 +- 7.925 keV
- Beta Decay Energy: B- -3929.000 +- 28.284 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: 9/2-
- Half life: 5.41 h
- Mode of decay: Electron capture to Po-209
- Branch ratio: 95.90 %
- Decay energy: 3.486 MeV
- Mode of decay: Alpha to Bi-205
- Branch ratio: 4.10 %
- Decay energy: 5.757 MeV
- Possible parent nuclides:
- Electron capture from Rn-209
- Alpha from Fr-213
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 |
1428 | 26 ns | 21/2- | | +10.0(2) | | | | | TDPAD | PR C14 1023 (76) |
| | | | 9.5(2) | | | | | TDPAD | DisA 37 408C (77) |
| | | | | | 0.78(8) | | [211At 2641] | TDPAD | PL 122B 27 (83) |
2429 | 890 ns | 29/2+ | | 15.38(14) | | | | | TDPAD | HFI 34 47 (87) |
| | | | | | 1.50(15) | | [211At 2641] | LEMS | PR C43 2566 (91) |
| | | | | | 1.50(15) | | [211At 2641] | TDPAD | PL 122B 27 (83) |
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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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