237PU 241CM A DECAY 1975AH05 06NDS 200608 237PU H TYP=FUL$AUT=M. S. Basunia$CIT=NDS 107, 3323 (2006)$CUT=15-Mar-2006$ 237PU C Others: 1971BB10,1967BA42,1957AS85. 237PU C 241CM source was prepared by irradiation of 239PU with 40-MeV 237PU2C ALPHA-particles; ALPHA-spectrum was taken with magnetic spectrometer; 237PU3C Measured EA,IA. 237PU C %A=1.0+-0.1. 237PU C AG(T): (A)(145G)(T) T=0.18 S 2 (1957St67). 237PU2C 237PU CA E From 1975AH05, except where noted. 237PU CA ALPHA's of 5828, 5821, 5807, 5781, 5778, and 5729 KEV, 237PU2CA reported in 1967Ba42, were not observed in 1975Ah05 (<0.3%); 237PU3CA therefore, these ALPHA groups are assumed to be due to impurities. 237PU CA IA ALPHA intensity per 100 A DECAYS (1975Ah05). 237PU2CA Measurements of 1967Ba42 are noted for comparison. 237PU CA HF R0(237PU)=1.498 2, average of R0(236PU)=1.4949 18 and 237PU2CA R0(238PU)=1.5013 10 (1998AK04). 237PU CA E(R) Recommended in 1991Ry01 from EA's in 1967Ba42, 237PU2CA 1971Bb10 and 1975Ah05. The original energies of 1967Ba42, 1971Bb10 and 237PU3CA 1975Ah05 have been adjusted by +0.6, +0.4 and -0.3 KEV, respectively, 237PU4CA due to changes in calibration energies (1991Ry01). 237PU CL E Deduced by evaluator from QA=6185.2 6 (241CM), EA, and 237PU2CL feeding level energy, except otherwise noted. 237PU CL J From adopted levels, except otherwise noted. 237PU CL E(A) 7/2[743] band; rotational const.= 5.3 keV. 237PU CL E(B) 1/2[631] band; rotational const.= 6.224 keV; decoupling 237PU2CL parameter = -0.4696. 237PU CL E(C) 3/2[631] band; rotational const.= 6.76 keV. 241CM P 0.0 1/2+ 32.8 D 2 6185.2 6 237PU N 0.010 1 237PU L 0.0 6 7/2- A 237PU CL J From 145.5G E3 transition to the G.S. 237PU A 6080.9 170.15 5 6.2E3 22 R 237PU CA IA=0.64 in 1967Ba42. 1991Ry01 recommend IA=0.15 5. 237PU CA QA=6185.2 6 (241CM) gives EA=6082.5 6 to the 0.0 level. 237PU L 47.3 6 9/2- A 237PU A 6036 3 0.12 4 4.5E3 16 237PU CA IA=0.10 in 1967Ba42. 237PU L 106.3 6 11/2- A 237PU A 5978 3 0.28 7 9.8E2 27 237PU L 145.536 9 1/2+ 0.18 S 2 BM 237PU CL E From 145.536G. EA gives a value of 145.9 6. 237PU CL J Favored ALPHA transition (hindrance factor 2.6 3) from 237PU2CL 241CM G.S. (JPI=1/2+) to this level (1975Ah05). 237PU A 5939.0 6 68.9 10 2.5 3 R 237PU CA IA=71.6 5 is given in 1976BaZZ. 1991Ry01 recommend IA=69.5 8 237PU2CA from measured values of 71.5 (1967Ba42) and 68.9 10 (1975Ah05). 237PU CA EA=5939.4 6 from QA=6185.2 6 (2003Au03) and E(level)=145.544 237PUxCA 10. 237PU G 145.536 9 E3 237PU CG E From 1974Po08 (s CE); EG=145.552 12 in 237AM EC decay. 237PU CG M EKC LE 3, ELC=39 8 was determined from relative 237PU2CG X-RAY and 145G intensities, assuming that all delayed X-RAYS 237PU3CG were from conversion of the 145G (1957St67). 237PU4CG See also 237AM EC decay. 237PUB G BE3W=1.46 17 237PU L 157.9 6 3/2+ B 237PU A 5927.2 15 18.1 5 8.2 9 R 237PU CA IA=16.3 2 is given in 1976BaZZ. 1991Ry01 recommend IA=17.7 8, 237PU2CA from measured values of 16.3 (1967Ba42) and 18.1 5 (1975Ah05). 237PU CA EA(to 155 level)=EA(145 level)-9.75 3=5929.3 7. (9.75 is 237PU2CA from the difference of 9.91 3 in level energies and includes recoil.) 237PU L 171.3 6 13/2- A 237PU A 5914 4 0.12 5 1.06E3 46 237PU L 201.1 2 5/2+ B 237PU A 5884.7 6 11.8 4 7.5 8 R 237PU CA IA=11.5 2 is given in 1976BaZZ. IA=11.7 8 is recommended 237PU2CA in 1991Ry01 from measurements of 11.8 4 (1975Ah05) and 11.5 (1967Ba42). 237PU CA EA(to 201 level)=EA(145 level)-54.71 3=5884.3 7 (54.71 is 237PU2CA from the difference of 55.64 3 in level energies and includes recoil) 237PU L 223.2 5 7/2+ B 237PU A 5863 3 0.14 5 4.9E2 19 237PU L 302.5 4 9/2+ B 237PU A 5785 3 0.07 AP 372 AP 237PU CA IA=1.8 from 1967Ba42. 237PU L 369.6 4 3/2+ C 237PU A 5719 3 0.08 4 142 73 237PU L 402.2 5 5/2+ C 237PU A 5687 3 0.22 5 34 9