237NP 237PU EC DECAY 1983AH02,1979EL05,1958HO0206NDS 200608
237NP H TYP=FUL$AUT=M. S. Basunia$CIT=NDS 107, 2323 (2006)$CUT=15-Mar-2006$
237NP C 1983AH02: Source prepared from 235U (93% enriched) with 31-MeV ALPHA
237NP2C particles bombardments; Detector: Ge, Si(Li); Measured: EG, IG, CC.
237NP C 1979EL05: Source prepared from 235U (93% enriched) with |J30-MeV 4HE
237NP2C ions bombardments; Detector: an x-ray Ge(Li) and a 54-cm{+3} Ge(Li);
237NP3C Measured: EG, IG, CC.
237NP C 1958HO02: Source prepared from 235U (enriched) with 26-29 MeV and
237NP2C 30-MeV 4HE ions; Detector: Na(I), Proportional counter; Measured: EG,
237NP3C GG coin.
237NP TE See 1962Ve05 for theoretical calculations of the LOGFT values
237NP2TE for p 5/2-, 5/2[523] to n 7/2-, 7/2[743] allowed-hindered,
237NP3TE p 5/2+, 5/2[642] to n 7/2-, 7/2[743] first-forbidden transitions.
237NP CE See 1966Bo08 for discussions on finite nuclear size effects
237NP2CE on the LOGFT values.
237NP CG GG: see 1958Ho02
237NP2CG
237NP TG X rays (NP):
237NP2TG E(x ray) I(x ray)/RI(59.54G)
237NP3TG 1983Ah02 1983Ah02 1979El05 1958Ho02
237NP4TG -------- --------- -------- --------
237NP5TG 11.89 2 0.389 16 XLL
237NP6TG 13.90 2 6.05 19 XLA
237NP7TG 17.81 2 6.23 19 XLB
237NP8TG 20.82 2 1.45 5 XLG
237NP9TG 14.1 5 12.1 4 5.4 10 XL (total)
237NP2TG
237NP3TG 97.08 2 4.16 13 XKA2
237NP4TG 101.07 2 6.63 22 XKA1
237NP5TG 113.30 2 0.81 4 XKB3
237NP6TG 114.24 2 1.56 5 XKB1
237NP7TG 114.95 2 0.064 4 XKB5
237NP8TG 117.51 3 0.64 3 XKB2+XKB4
237NP9TG 118.45 5 0.195 13 XKO2+XKO3
237NP2TG 14.0 5 13.1 4 7.1 10 XK (total)
237NP3TG
237NP4TG other measurements: 1953Ho49.
237NP CG E From adopted levels and gammas, except otherwise noted.
237NP CG RI From 1979El05, unless noted otherwise. RI in 1983Ah02 and
237NP2CG 1979EL05 are in good agreement.
237NP CG M(E,B,C)$From 241AM A DECAY.
237NP CG M(A,F) From CE measurements in 1958Ho02 (s) and 1983Ah02 (semi).
237NP CG CC From 237U B- decay and 241AM A DECAY.
237NP CG CC(A,E) Anomalously converted. See 237U B- decay and 241AM A DECAY.
237NP CG CC(B) For MR AP 0.13 which was calculated by the evaluator by using
237NP2CG the strong coupling collective model and MR(33G)=0.13. Conversion
237NP3CG electron data from 241AM A DECAY for this transition suggest
237NP4CG MR AP 0.86 which is not consistent with the fact that the electron
237NP5CG lines for the 42.7-KEV transition were not seen in 237PU decay
237NP6CG (1958Ho02): ICE(L 42.7G) would be expected to be about 1.8 times of
237NP7CG ICE(L 43.5G), if MR(42.7G) were about 0.86.
237NP CG E(Z) not seen in 237PU EC decay.
237NP CL E From a least squares fit to the G-ray energies.
237NP CL J From adopted levels.
237PU P 0.0 7/2- 45.64 D 4 220.0 13
237NP N 0.0328 15 1.0 1.0
237NP PN 3
237NP CN NR The normalization factor of 0.0328 15 for absolute
237NP2CN intensities has been obtained by the evaluator by requiring the sum
237NP3CN of EC feedings to be 100%. The EC feeding to the GS was obtained from
237NP4CN the K X-RAY intensity ratio of I(K X-RAY)/I(59G)=13.1 4
237NP5CN (1979El05). The calculated L X-RAY intensity ratio of
237NP6CN I(L X-RAY)/I(59.5G)=12.3 10
237NP7CN is in good agreement with the experimental value of 12.1 4 (1979El05).
237NP L 0.0 5/2+ 2.14E+6 Y 1
237NP CL T From adopted levels.
237NP E 79 2 6.845 14
237NPS E CK=0.483 4$CL=0.3678 22$CM+=0.1490 11
237NP L 33.207 14 7/2+
237NP E 11.8 14 7.43 6
237NPS E CK=0.377 6$CL=0.439 4$CM+=0.1837 18
237NP G 33.196 1 2.27 7 M1+E2 0.13 3 185 23 F
237NPS G LC=138 20 $ MC=35 5
237NP L 59.545 15 5/2-
237NP E 8.4 8 7.35 5
237NPS E CK=0.242 9$CL=0.529 6$CM+=0.229 3
237NP G 26.3446 2 6.75 20 E1 8 2 E
237NPS G ELC=6 2 $ EMC=1.6 2
237NP G 59.5409 1 100 3 E1 1.16 7 A
237NPS G ELC=0.84 6 $ EMC=0.226 7 $ ENC+=0.094 10
237NP L 75.91 10 9/2+
237NP E 0.26 AP 8.7 AP
237NPS E CK=0.131 10$CL=0.601 6$CM+=0.268 4
237NP CE I(EC) to the 75.88-KEV level may be less than AP 0.26%, if
237NP2CE there is a 27.03G feeding this level (see 241AM A DECAY).
237NP G 42.704 5 0.090 AP M1+E2 0.13 AP 80 AP B
237NPS G LC AP 59 $ MC AP 15
237NP CG MR From adopted gammas.
237NP G 75.8 2 0.0096 AP [E2] 54.6 Z S
237NP CG RI calculated from RI(75.8G)/RI(42.73G)=3/28, as measured in
237NP2CG the COULOMB excitation of 237NP.
237NP L 102.968 16 7/2-
237NP E 0.55 AP 8.1 AP
237NPS E CL=0.6773 9$CM+=0.3227 9
237NP CE I(EC) to 102.9-KEV level may be more than 0.55%, if there
237NP2CE is a 27.03G deexciting the level (see 241AM A DECAY).
237NP G 27.020 7 Z S
237NP2 G FL=75.91
237NP G 43.420 3 0.12 AP (M1+E2) 0.41 2 167 9 C
237NPS G LC=124 7 $ MC=32.8 18
237NP G 69.76 3 0.0048 AP (E1) 0.336 Z S
237NPS G LC=0.252 $ MC=0.0621 $ NC+=0.0219
237NP CG RI calculated by the evaluator from
237NP2CG RI(69.76G)/RI(43.42G)=73 8/2.9 4, as measured in 241AM A DECAY.
237NP G 102.98 2 0.032 AP E1 0.121 Z S
237NPS G LC=0.091 $ MC=0.022 $ NC+=0.0080
237NP CG RI calculated by the evaluator from
237NP2CG RI(102.98G)/RI(43.42G)=19.5 1/73 8, as measured in 241AM A DECAY.
237NP L 158.517 17 9/2-
237NP E 0.14 LT 8.0 GT
237NPS E CL=0.588 5$CM+=0.412 5
237NP G 55.56 2 0.05 LT M1+E2 0.46 4 67 6 C
237NP CG E From 241AM A decay.
237NP G 98.97 2 0.06 LT E2 15.6 Z S
237NP CG RI calculated by the evaluator from
237NP2CG RI(98.97G)/RI(55.56G)=203 3/181 18, as measured in 241AM A DECAY.
237NP G 125.30 2 0.01 LT[E1] 0.306 Z S
237NP CG RI calculated by the evaluator from RI(125.3G)/RI(55.56G)=40.8
237NP2CG 3/181 18, as measured in 241AM A DECAY.