ADOPTED LEVELS for 227Pa
Author: Ictp-2014 Workshop Group | Citation: Nucl. Data Sheets 132, 257 (2016) | Cutoff date: 15-Jan-2016
Author: B. Singh | Citation: ENSDF | Cutoff date: 15-JAN-2016
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-2190 keV 18 | S(n)= 7273 keV 14 | S(p)= 3654 keV 9 | Q(α)= 6580.4 keV 21 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 231Np α decay (48.8 M) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0.0 | A | (5/2-) | 38.3 m 3 % ε = 15 2 % α = 85 2 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (5/2-) | 38.3 m 3 % ε = 15 2 % α = 85 2 | Decay modes from εK(exp)/α=0.18 2 (1951Me10). E(level): Decay modes from εK(exp)/α=0.18 2 (1951Me10). |
227Pa evaluated by B. Singh.
1951Me10: 227Pa produced and identified in 232Th(p,6n) reaction at Berkeley cyclotron facility. 227Pa isotope seems to have been formed in earlier experiments (1948Gh01 and p.R. O’Connor and γ.t. Seaborg, Phys. Rev. 74, 1189 (1948)) at Berkeley using U(3He,F),E=380 MeV reaction with fission yield measured. In another study (Meinke et al, Jour. Inorg. Chem. 3, 69 (1956)) yield measurements were reported in several reactions leading to the production of 227Pa.
Experimental spectroscopic studies of decay of 227Pa: 1995Li04, 1990Sh15, 1989Ah05. Others: 1991Ga28, 1973Ja06, 1964Ge08, 1963Su10 (also 1962Su09), 1958Hi78,
1999Sc17, 1997Sc26: measured α(θ) from oriented 227Pa nuclei
1991Cw01, 1987Sh24, 1984Le04: calculated levels, J, π, reflection-asymmetric shapes
2016Du01: measured fission fragment mass distributions from 227Pa compound nucleus formed in 208Pb(19F,X),E=87-120 MeV
Q-value: S(2n)=13650 70, S(2p)=9385 9 (2012Wa38)