81SE 80SE(N,G) E=THERMAL 1971RA07 81SE H TYP=FUL$AUT=CORAL M. BAGLIN$CIT=NDS 79, 447 (1996)$CUT=1-Nov-1996$ 81SE C Other measurements: 1981En07, (natural target, three primary 81SE2C G-rays observed); 1970Ba54 (95.7% 80SE target, four primary and three 81SE3C secondary G-rays observed). 81SE C 1971Ra07: natural and 93.65% 80SE targets. 81SE2C GE(LI)-NAI pair spectrometer, FWHM=2.45 KEV for EG GE 2.5 81SE3C MEV. GE(LI) detectors for EG=0-2.5 MEV, FWHM=1.05 KEV at 122 KEV 81SE4C and FWHM=2.4 KEV at 1.33 MEV. Measured EG, RI, GG (40-ns timing 81SE5C resolution). 81SE C SN=6101.1 6 measured by 1981En07. 81SE CG No capture state to GS transition was found (RI<0.2%). 81SE CG The relatively strong 521G branch deexciting the 624 level 81SE2CG in 81AS B- decay is not reported in (N,G); however, it would probably 81SE3CG have been masked by a 77SE impurity GAMMA (see 1974Ch11). 81SE CG E(A) Uncertain G-line. 81SE CG RI Photons per 100 captures in 80SE. Authors' uncertainties 81SE2CG in relative IG are shown; the additional uncertainty in absolute IG 81SE3CG is AP 10% for EG LE 2 MEV, 15% for EG>2 MEV. 81SE CL E From least-squares adjustment of EG excluding EG for all 81SE2CL multiply placed lines. 81SE CL J From adopted levels. 81SE CG RI(B) RI=6.2 5 for doublet. Assuming I(388G)/I(491G)=0.101 12 81SE2CG for 491 level branching (from B- decay), RI=6.6 9 for the 491 to GS 81SE3CG component of 491G in 81SE4CG (N,G), leaving RI=-0.4 10 for the 1725 to 1233 component. Evaluator, 81SE5CG therefore, assigns the entire doublet RI to former transition and an 81SE6CG upper limit of 0.6 to the latter. Placement of latter component is, 81SE7CG consequently, shown as tentative. 81SE CG RI(D) RI=0.36 4 for doublet. Assuming I(938G)/I(1406G)=0.33 6 81SE2CG for 1407-level branching (from B- decay), RI=0.43 10 for 1407 to 81SE3CG 468 transition in (N,G), leaving RI=-0.07 11 for 1828 to 889 81SE4CG component. Evaluator, therefore assigns the entire doublet RI to the 81SE5CG former transition and an upper limit of 0.04 to the latter. 81SE CL E(E) 1971Ra07 show no G deexciting this level; however, the 81SE2CL unplaced 3056.5G has plausible EG and IG for a 3526 to 468 level 81SE3CL transition. 81SE CG E(E) See comment on 3526 level concerning possible placement 81SE2CG of this G. 81SE CL J(F),E(F)$E from SN; least-squares adjustment of EG gives 6701.1 5. 81SE2CL JPI based on thermal neutron capture by JPI=0+ target. 81SE CL T(G) Since 468G and 491G are each coin with G rays feeding the 81SE2CL 468 and 491 levels when the coin resolving time is 40 NS, T for 81SE3CL either level cannot be significantly greater than 40 NS. 81SE N 1.00 15 81SE CN NR Absolute intensity (intensity/100 neutron captures by 80SE) 81SE2CN measured by 1971Ra07. Intensities calibrated relative to I(479G) in 81SE3CN boron(N,G) (for low EG) and I(7367.7G) in PB(N,G) (for high EG); 81SE4CN uncertainty AP 10% for EG LE 2000, 15% for EG>2000. 81SE cN SIGMAN=0.61 4 81SE PN 5 81SE G 721.3 6 1.8 7 A 81SE G 788.5 5 1. 81SE G 799.6 7 0.14 7 A 81SE G 805.1 7 0.18 9 A 81SE G 918.8 5 0.34 11 81SE G 987.7 8 0.21 9 A 81SE G 993.0 8 0.66 25 A 81SE G 997.3 7 0.46 21 81SE G 1012.7 5 0.57 11 A 81SE G 1164.5 4 1. 81SE G 1327.7 8 0.34 11 81SE G 1438.2 7 0.50 14 A 81SE G 1462.3 3 0.48 14 A 81SE G 1562.5 5 0.55 9 81SE G 1670.0 6 0.75 11 A 81SE G 1769.3 6 0.75 11 81SE G 1799.5 6 0.55 14 A 81SE G 1858.5 10 0.30 9 A 81SE G 1896.3 8 0.87 14 81SE G 1951.3 4 1.37 16 81SE G 2032.2 6 0.91 5 81SE G 2041.1 5 0.911 23 81SE G 2051.0 8 0.48 18 A 81SE G 2151.3 6 1.8 5 81SE G 2162.3 7 2.51 7 81SE G 2207.1 6 0.87 25 81SE G 2218.6 10 1.6 7 A 81SE G 2273.2 6 1.1 5 81SE G 2694.0 10 3.0 5 81SE G 2731.3 13 2.4 5 81SE G 2792.1 20 1.5 5 81SE G 2910.1 12 3.1 5 81SE G 2966.0 13 2.5 5 81SE G 3056.5 15 2.3 3 E 81SE G 3820.4 18 1.3 3 A 81SE G 4310.6 14 1.1 5 A 81SE G 4336.6 20 1.6 7 81SE G 4540.4 24 1.1 5 A 81SE L 0.0 1/2- 81SE L 102.92 9 7/2+ 81SE G 102.89101.11 8 E3 6.88 81SE L 294.14 19 9/2+ 81SE G 191.05200.66 6 [M1] 0.018 81SE L 467.83 11 3/2- G 81SE G 467.741543.9 45 C 81SE L 491.28 12 (5/2)- G 81SE G 388.4 30.67 5 81SE G 491.3315 6.2 5 @C 81SEF G FLAG=B 81SE L 615.8 3 ? 81SE G 616.4 6 81SE L 624.49 225/2- 81SE G 156.4 30.24 4 C 81SE L 889.58 21 (3/2+,5/2,7/2+) 81SE G 264.8 30.16 4 81SE G 399.8 60.14 4 &C 81SE G 786.4 40.56 15 81SE G 889 10.7 A 81SE L 1052.36 215/2+ 81SE G 757.6 30.47 10 81SE G 949.65251.25 15 & 81SE L 1232.86 22 1/2+ 81SE G 765.04201.54 13 C 81SE G 1232.7 0.33 6 & 81SE CG E 1232.7 4 for doublet. 81SE L 1303.49 19 5/2+ 81SE G 812.5 60.28 4 &C 81SE G 835.74201.10 12 C 81SE G 1201.0100.4 3 81SE L 1406.59 22 3/2- 81SE G 915.4 60.10 4 C 81SE G 938.7 30.36 4 @C 81SEF G FLAG=D 81SE G 1406.7 41.3 2 81SE L 1702.56 25 3/2+ 81SE G 399.8 60.14 4 & 81SE G 649.5 50.17 4 81SE G 812.5 60.28 4 & 81SE G 1087.2 40.24 6 & 81SE G 1210.8100.7 4 81SE G 1599.5 50.35 4 81SE G 1702.2100.33 11 81SE L 1711.40 22 (1/2,3/2,5/2-) 81SE G 1087.2 40.24 6 & 81SE G 1243.54250.66 6 C 81SE G 1711.0 60.55 8 81SE L 1725.04 18 (3/2)+ 81SE G 491.33 0.6 LT @ ? 81SE3 G FL=1232.81 81SEF G FLAG=B 81SE CG E 491.33 15 for doublet. 81SE G 672.19 0.51 5 & 81SE3 G FL=1051.8 81SE CG E 672.19 25 for doublet. 81SE G 1232.7 0.33 6 & 81SE3 G FL=490.46 81SE CG E 1232.7 4 for doublet. 81SE G 1257.14201.11 9 C 81SE G 1725.4 35.9 5 81SE L 1828.2 3 3/2+ 81SE G 938.7 30.04 LE @ 81SEF G FLAG=D 81SE G 1360.7100.24 5 81SE G 1828.1 40.39 5 81SE L 2174.2 5 81SE G 1549.4 70.30 5 81SE G 1706.6 70.52 6 C 81SE L 2253.05 24 (5/2+) 81SE G 949.65251.25 15 & 81SE G 1627.1100.28 5 81SE G 1636.2 80.38 7 A 81SE G 1784.8 80.90 24 C 81SE G 1959.5 50.42 7 81SE G 2149.6 80.32 8 & 81SE L 2333.3 3 5/2+ 81SE G 1841.9 50.26 5 81SE G 1865.3 30.57 7 C 81SE L 2383.6 3 (5/2-,7/2,9/2-) 81SE G 672.19250.51 5 & 81SE G 1892.0 80.24 5 C 81SE L 2568.5 7 1/2,3/2 81SE G 1162.0100.7 3 81SE G 2570.0151.37 20 81SE L 2773.9 4 5/2+ 81SE G 1367.2100.33 5 81SE G 1884.2 50.50 6 81SE G 2149.6 80.32 8 & 81SE L 2952.9 10 1/2,3/2,5/2+ 81SE G 2485.6200.65 20 C 81SE L 3525.6 8 1/2,3/2,5/2+ E 81SE G 3525.511 81SE L 6701.2 4 1/2+ F S 81SE cL E$6701.0 6 from 1995Au04. 81SE2cL Observed deexcitation intensity is 71% of GS feeding. 81SE G 3175.410 1.16 20 81SE G 3748.310 1.7 4 81SE G 4133.712 0.83 15 81SE G 4366.210 2.0 4 81SE G 4447.510 1.86 25 81SE G 4976.110 8.7 23 81SE G 4997.517 0.43 14 81SE G 5295.317 0.22 10 81SE G 5469.712 0.45 15 81SE G 6233.015 33 6