161DY 161TB B- DECAY 1984VY01 11NDS 201111 161DY H TYP=FUL$AUT=C. W. Reich$CIT=NDS 112,2497 (2011)$CUT=1-Jun-2011$ 161DY D DATA SET UPDATED (NOVEMBER, 2009) BY CW REICH TO INCLUDE NEW QP 161DY2D VALUE, CC VALUES FROM BRICC, NEW REFERENCE FOR PRECISE EG VALUES, 161DY3D AND REVISED COMMENTS 161DY D DATA SET REVISED (OCT., 1999) BY CW REICH TO INCLUDE: NEW QP VALUE AND 161DY2D RECALCULATED LOGFT VALUES; NEW CIRCULAR POLARIZATION DATA FOR THE 25 161DY3D AND 74 G'S; REVISED MR DATA AND RELATED COMMENTS, ADDED 4 NEW PRECISE 161DY4D EG VALUES 161DY D Experimental methods: 161DY C All 161TB sources were made by the 160GD(N,G) reaction followed by 161DY2C B- decay, unless otherwise noted. Usually an enriched target was 161DY3C used and the Tb was chemically separated. 161DY D 1956Co58: CE's measured in magnetic spectrograph and B-'s in magnetic 161DY2D spectrometer. Report 7 G's. Evaluator suggests that the 161DY3D 531 B- should feed the 75 level rather than the ground state. 161DY D 1956Sm10: CE's and B-'s measured in magnetic spectrometer. G singles 161DY2D and GG coincidences measured with NaI detectors. Report 4 G's. 161DY D 1957Ve17: Measured half-lives of 25 and 74 levels. 161DY D 1958Be01: Theoretical discussion of 161DY levels, based on data of 161DY2D 1958Ha13. 161DY D 1958Ha13: CE's and B-'s measured in magnetic spectrometer. 161DY2D G and GG spectra measured with NaI 161DY3D detectors. G-CE and G-B- coincidences measured. Report 7 G's. 161DY D 1958Mc11: G and GG spectra measured with NaI and Xenon detectors. 161DY D 1959Ha09: 161TB produced by p reactions on Er or Yb targets, with 161DY2D chemical separation. CE's measured in magnetic spectrograph. 161DY3D Report 10 G's. 161DY D 1960Ve03: G and GG spectra measured with NaI detectors. CE's and B-'s 161DY2D measured with magnetic spectrometers. Half-lives measured. 161DY C 1961Gr01: CE's measured in iron-free magnetic spectrometer. 161DY2C Abstract only, but 1974Tu05 have some additional information. 161DY D 1962Su03: G's, GG coincidences, and GG(THETA) measured with NaI 161DY2D detectors. Report 7 G's. 161DY D 1963Ho15: Measured 161TB half-life with proportional counters. 161DY D 1963Ko08: B- spectra measured with magnetic spectrometer. 161DY C 1964Fu11: Measured G and CE singles and GG, G-CE and G-B- coincidences 161DY2C with NaI detectors and magnetic spectrometers. Report 9 G's. 161DY D 1965Br16: 161TB produced by 159TB(2N,G). G's measured with 161DY2D curved-crystal spectrometer. Report 10 G's. 161DY C 1965Su04: Reanalyzed GG(THETA) data of 1962Su03 with CE data of 161DY2C 1961Gr01 to obtain two mixing ratios and one penetration 161DY3C parameter. 161DY C 1966Fu07: Measured G's with small Ge detector. Report 15 G's (i.e., 161DY2C 15 RI values). 161DY C 1966Gi02: CE's measured in magnetic spectrometer for 25 and 48 G's 161DY D 1966Su03: Abstract giving same results as in 1965Su04. 161DY D 1968Mu11: G-sum coincidence spectra with NaI detector. Verified scheme 161DY D 1969Be49: Measured G spectra with small Ge detector. Measured 161DY2D half-lives by CE-CE coincidences with two long-lens spectrometers. 161DY D 1971Ba28: Measured 161TB half-life with proportional counters. 161DY C 1971Kr19: Measured G(THETA,H) with oriented 161TB nuclei. Deduced MR 161DY2C for 49 and 75 G's. 161DY D 1971St38: Measured x/G ratio for 25 G in coincidence with 49 G 161DY2D with Ge detectors. 161DY D 1972De67: Measured RI's for 4 G's. Interest is data for activation 161DY2D analysis. 161DY D 1972WyZZ: Laboratory report; gives preliminary value of 161TB half-life 161DY D 1974Bo41: Theoretical calculation of LOGFT values between Nilsson 161DY2D states of interest here. 161DY D 1974Pr06: Measured G's with small Ge detector. Data given only on 161DY2D decay-scheme drawing. Uncertainties for RI are `10%'. 161DY D 1979Mi17: Discuss LOGFT values for B- transitions from 3/2[411] to 161DY2D members of 1/2[521] band. 161DY D 1982Bh07: Calculated penetration parameter for 48.9 |g using earlier 161DY2D data. 161DY C 1983Hn01: Measured G energies and intensities for 18 G's and K x and 161DY2C computed B- feeding intensities. Deduced penetration parameter 161DY3C of 57 G. 161DY C 1983Ri15: Measured G(THETA) for oriented nuclei to determine moments of 161DY2C 161TB ground state and MR for G's in 161DY. 161DY D 1984De49: Precise measurement of 3 G energies with crystal 161DY2D spectrometer. See 1985Je05 for later paper. 161DY C 1984Vy01: Measured G energies and intensities for 33 G's. 161DY D 1985Bh08: Updated penetration parameter calculation for 48 G in 161DY2D 1982Bh07. 161DY D 1985Je05: Precise remeasurement of 3 G energies with crystal 161DY2D spectrometer, replacing 1984De49. 161DY C 1999Ts02: Measured the parity-odd circular polarizations of the 25.6 161DY2C and 74.4 gammas using a Compton polarimeter. 161DY C Theory calculations related to LOGFT values: 1974Bo41 and 1979Mi17. 161DY CB IB From G-intensity balance, except where noted otherwise. 161DY CG Decay scheme is that of 1984Vy01, which is the same as that 161DY2CG proposed by 1966Fu07 and each succeeding investigator. 161DY CG Studies of this decay not otherwise referenced here include 161DY2CG 1956Co58, 1956Sm10, 1958Be01, 1958Mc11, 1962Su03, 1963Ho15, 161DY3CG 1963Ko08, 1964Fu11, 1968Mu11, 1971Ba28, 1972De67, 1972WyZZ, and 161DYxCG 1984De49. 161DY CG E Values are averages of the best available data from 1984Vy01, 161DY2CG 1985Je05, 1969Be49, 1983Hn01, and 1965Br16. 161DY CG E(Y) Value from the evaluation by 2000He14 (see also 1999He10). 161DY CG RI Weighted average of values from 1984Vy01, 1983Hn01, 1974Pr06, 161DY2CG 1969Be49, and 1965Br16. 161DY CG RI I(K x rays)=221 12 (1983Hn01). 161DY CG M,MR From the Adopted Gammas data set. These are based on 161DY2CG studies of the 161HO and 161TB decays and the (N,G) reaction. The 161DY3CG results are from ICC, L (and M) subshell ratios, G(THETA), and 161DY4CG GG(THETA) measurements. For a discussion of the bases for the MR 161DY5CG choices in specific cases, see the Adopted Gammas data set. 161DY CG E(X) Existence of G known from 161HO EC decay. 161DY CL $Decay scheme is that of 1984Vy01, which is the same as that proposed 161DY2CL by 1966Fu07 and each succeeding investigator. 161DY CL Studies of this decay not otherwise referenced here include 161DY2CL 1956Co58, 1956Sm10, 1958Be01, 1958Mc11, 1962Su03, 1963Ho15, 161DY3CL 1963Ko08, 1964Fu11, 1968Mu11, 1971Ba28, 1972De67, 1972WyZZ, and 161DYxCL 1984De49. 161DY CL E From a least-squares fit to the G energies. 161DY CL J From the adopted values. See the '^Adopted ^Levels' data set 161DY2CL for further discussion. 161DY CL T Level half-lives include data from 161TB B- decay only. See 161DY2CL the Adopted Levels for additional data on these and other levels. 161DY DL Levels are 5/2(0), 7/2(43), 9/2(100), and 11/2(184). 161DY DL Levels are 5/2(25), 7/2(103), 9/2(200), and 11/2(320). 161DY DL Levels are 3/2(74), 5/2(131), 7/2(212), and (9/2)(314). 161DY DL Levels are 1/2(366), 3/2(418), and 5/2(451). 161DY DL Level is 3/2(550). 161DY CL BAND(A) GS BAND. CONF=5/2[642]. 161DY CL BAND(B) 5/2[523] band 161DY CL BAND(C) 3/2[521] band 161DY CL BAND(D) 1/2[521] band 161DY CL BAND(F) |DN=2-MIXED 3/2[402]+3/2[651] BAND. 161DY2CL In these studies, this band has often been assigned simply as 161DY3CL 3/2[651], but the evaluator believes that the |DN=2-mixed 161DY4CL configuration assignment is more appropriate here. 161TB P 0 3/2+ 6.89 D 2 593.0 13 161TB DP J J measured by atomic-beam, magnetic resonance (1964Bu09). 161TB2DP PI from configuration assignment. 161TB DP T From the 161TB Adopted Values 161TB DP QP From 2009AuZZ. 2003Au03 report 592.9 {I13}. 161DY N 0.102 5 0.102 5 1.00 1.00 161DY CN NR normalization is calculated to give 100% feeding of the 161DY2CN ground state, including a 5% B- branch to ground state. 161DY PN 3 161DY L 0 5/2+ STABLE A 161DY DL J J measured; PI from band assignment. 161DY B 589 5 5 7.5 GT 161DYS B EAV=183.7 5 161DY CB E unweighted average from 1958Ha13, 1964Fu11, 1963Ko08, and 161DYxCB 1956Sm10. 161DY CB IB the 10% B- transition reported by 1964Fu11 to both the 0 and 161DY2CB 25 levels has been assumed by the evaluator to be equally divided 161DY3CB between them. 161DY L 25.65136 3 5/2- 29.5 NS 4 B 161DY CL T weighted average of: 27 ns 2 (1957Ve17); 28 ns 2 (1958Ha13); 161DY2CL 29 ns 3 (1959Fa06); 29.4 ns 10 (1965Me08); 28.4 ns 12 (1969Be54); 161DY3CL and 30.0 ns 5 (1977Pe20). 161DY B 5 5 7.5 GT 161DYS B EAV=174.6 5 161DY CB IB see note on ground-state IB. 161DY G 25.65135 3 227 10E1 2.29 Y 161DY3 G L1/L2=1.39 3$ L1/L3=1.00 2 161DYS G LC=1.79 3$MC=0.399 6$NC+=0.0984 14 161DYS G NC=0.0878 13$OC=0.01035 15$PC=0.000297 5 161DY CG MR from their measured x/G ratio, 1971St38 report 161DY2CG | |d| LT 0.032. From L-subshell ratios, 1966Gi02 give 161DY3CG | |d| LT 0.010. The evaluator feels that this limit is too 161DY4CG optimistic. 161DY CG L1/L2,L1/L3$subshell ratios are from 1961Gr01, as quoted in 1974Tu05. 161DY CG From Compton polarimetry, 1999Ts02 report the value 161DY2CG -(3.8 8)|*10{+-3} for the parity-odd circular polarization of this G. 161DY L 43.818 4 7/2+ A 161DY G 18.15 5 E1 5.93 10 1.4 5 X S 161DYS G L/T=0.668 7$M/T=0.151 3$N+/T=0.0364 8 161DYS G N/T=0.0327 7$O/T=0.00360 8$P/T=9.00E-5 19 161DY CG TI calculated by evaluator from 161HO EC decay data. 161DY G 43.81 3 0.59 6 M1+E2 0.216 8 7.7 3 C 161DYS G LC=5.94 21$MC=1.36 5$NC+=0.352 13 161DYS G NC=0.310 12$OC=0.0409 14$PC=0.001339 20 161DY CG MR from L-subshell ratios in 161TB B- decay, 1961Gr01 report 161DY2CG %E2=4, with no uncertainty given. 161DY L 74.56670 5 3/2- 3.14 NS 4 C 161DY CL T weighted average of: 2.3 ns 7 (1957Ve17 or 1960Ve03); 161DY2CL 3.0 ns 3 (1985Ha13); 3.1 ns 6 (1959Fa06); 2.95 ns 15 (1965Ay02); 161DY3CL 3.36 ns 10 (from 1965Me08 but with uncertainty increased from 0.05 161DY4CL because value is inconsistent with other values); 3.34 ns 18 161DY5CL (1969Be49); 3.08 ns 5 (1969Be54), and 3.16 ns 5 (1977Pe20). 161DY B 522 65 4 6.73 3 161DYS B EAV=157.4 5 161DY CB E UNWEIGHTED AVERAGE FROM 1956Sm10, 1958Ha13 AND 1964Fu11. 161DY G 48.91533 5 167 4 M1+E2 -0.056 1 3.19 YC 161DYS G LC=2.49 4$MC=0.550 8$NC+=0.1463 21 161DYS G NC=0.1269 18$OC=0.0183 3$PC=0.001003 14 161DY CG M deduced penetration parameter is LAMBDA=+2.5 23 161DY2CG (1982Bh07,1985Bh08). THESE AUTHORS DERIVED MR{+2}=0.0036 2 IN THEIR 161DY3CG ANALYSIS. 161DY CG MR 1966Gi02 report %E2=0.310 5, from L- and M-SUBSHELL ratios. 161DY2CG In computing the listed MR value, the evaluator has doubled the 161DY3CG quoted uncertainty. The sign is from 1983Ri15, G(THETA), who report 161DY4CG MR=-0.067 42. Other: MR=-0.01 6, from G(THETA) (1971Kr19). 161DY G 74.56669 6 100 2 E1 0.672 Y 161DYS G KC=0.556 8$LC=0.0909 13$MC=0.0200 3$NC+=0.00514 8 161DYS G NC=0.00451 7$OC=0.000603 9$PC=2.46E-5 4 161DY CG MR MR=0.00 3. An average of: -0.006 20, from G(THETA) 161DY2CG (1983Ri15); 0.06 +3-6, from GG(THETA) (1966Su03); and +0.08 10, 161DY3CG from G(THETA) (1971Kr19). 161DY L 100.46 3 9/2+ A 161DY G 56.64 3 M1+E2 0.22 3 12.91 25 X S 161DYS G KC=9.94 18$LC=2.31 21$MC=0.52 5$NC+=0.136 13 161DYS G NC=0.120 12$OC=0.0162 14$PC=0.000631 11 161DY G 100.5 1 0.0010 5 (E2) 2.66 161DYS G KC=1.109 16$LC=1.195 18$MC=0.286 5$NC+=0.0719 11 161DYS G NC=0.0642 10$OC=0.00771 12$PC=4.60E-5 7 161DY L 103.067 3 7/2- B 161DY G 59.243 12 0.218 21E1 1.220 161DYS G KC=0.999 14$LC=0.1733 25$MC=0.0381 6$NC+=0.00974 14 161DYS G NC=0.00858 12$OC=0.001125 16$PC=4.32E-5 6 161DY CG MR from G(THETA), MR=-0.1 +5-3 (1983Ri15). 161DY G 77.422 5 0.585 20M1+E2 -1.050 8 6.15 161DYS G KC=3.03 5$LC=2.41 4$MC=0.572 9$NC+=0.1444 22 161DYS G NC=0.1285 20$OC=0.01569 24$PC=0.0001691 25 161DY CG MR 1961Gr01 report %E2=47, from L-subshell ratios. From 161DY2CG G(THETA), 1983Ri15 report MR=-1.1 +3-16. 161DY CG From Compton polarimetry, 1999Ts02 report the value 161DY2CG -(7.0 15)|*10{+-5} for the parity-odd circular polarization of this G. 161DY G 103.065 4 0.99 4 E1 0.285 161DYS G KC=0.238 4$LC=0.0368 6$MC=0.00806 12$NC+=0.00209 3 161DYS G NC=0.00183 3$OC=0.000250 4$PC=1.101E-5 16 161DY L 131.7585 3 5/2- 0.145 NS 15 C 161DY CL T from 1969Be49. Others: LE 3 ns (1958Ha13); 161DY2CL LE 0.3 ns (1965Me08); LE 0.3 ns (1969Be54). 161DY B 460 25.7 16 6.96 3 161DYS B EAV=137.7 5 161DY CB E FROM 1958Ha13 AND 1964Fu11. 161DY G 28.701 12 0.358 22M1+E2 0.036 +8-10 15.5 5 161DYS G LC=12.1 4$MC=2.68 9$NC+=0.713 22 161DYS G NC=0.619 19$OC=0.0893 24$PC=0.00484 7 161DY G 57.1917 3 17.5 5 M1+E2 -0.187 16 12.39 19 Y 161DYS G KC=9.78 15$LC=2.03 10$MC=0.459 23$NC+=0.120 6 161DYS G NC=0.105 5$OC=0.0145 6$PC=0.000619 10 161DY CG E from the evaluation by 1999He10. 161DY CG M deduced penetration parameter is LAMBDA=-5 5 from 161DY2CG LAMBDA=-7 +6-8 (1965Su04,1966Su03) and LAMBDA=-4.0 42 (1983Hn01). 161DY3CG VALUES OF MR=-0.22 AND MR=-0.20, RESPECTIVELY, WERE USED IN THESE 161DY4CG AUTHORS' ANALYSES. 161DY CG MR 1961Gr01 report %E2=3, from L-subshell ratios. 1965Su04 161DY2CG report MR=-0.22 2, from GG(THETA). 1983Ri15, from G(THETA), give 161DY3CG MR=-0.14 10. 1983Hn01 report %E2=3.8 4, deduced from x/G ratios and 161DY4CG a particular choice of L1/L2 and LI/L3 ratios. 161DY G 87.941 4 1.79 4 (E1) 0.435 C 161DYS G KC=0.362 5$LC=0.0573 8$MC=0.01256 18$NC+=0.00325 5 161DYS G NC=0.00285 4$OC=0.000385 6$PC=1.638E-5 23 161DY G 106.113 3 0.763 24M1+E2 -0.85 35 2.09 5 161DYS G KC=1.39 17$LC=0.54 15$MC=0.13 4$NC+=0.032 10 161DYS G NC=0.028 9$OC=0.0036 10$PC=7.8E-5 15 161DY CG M from L-subshell ratios (1961Gr01). 161DY CG MR from G(THETA) (1983Ri15). 161DY G 131.8 1 0.001 AP[E1] 0.1475 161DYS G KC=0.1238 18$LC=0.0186 3$MC=0.00406 6$NC+=0.001060 15 161DYS G NC=0.000926 14$OC=0.0001281 19$PC=5.93E-6 9 161DY L 212.923 25 7/2- C 161DY B 0.0117 16 9.90 6 1U 161DYS B EAV=124.0 5 161DY G 81.27 5 0.0220 24M1+E2 0.18 4 4.40 161DYS G KC=3.60 6$LC=0.62 4$MC=0.139 10$NC+=0.0368 25 161DYS G NC=0.0320 22$OC=0.0045 3$PC=0.000224 4 161DY G 109.83 4 (M1) 1.83 X S 161DYS G KC=1.541 22$LC=0.227 4$MC=0.0498 7$NC+=0.01329 19 161DYS G NC=0.01151 17$OC=0.001683 24$PC=9.61E-5 14 161DY G 112.60 15 0.0011 5 E1 0.225 161DYS G KC=0.188 3$LC=0.0287 5$MC=0.00629 10$NC+=0.001636 24 161DYS G NC=0.001431 21$OC=0.000196 3$PC=8.82E-6 13 161DY G 138.3 1 0.0078 12E2 0.838 161DYS G KC=0.468 7$LC=0.285 4$MC=0.0678 10$NC+=0.01714 25 161DYS G NC=0.01525 22$OC=0.00187 3$PC=2.04E-5 3 161DY G 187.3 2 M1,E2 0.35 6 X S 161DYS G KC=0.27 8$LC=0.064 15$MC=0.015 4$NC+=0.0038 9 161DYS G NC=0.0034 9$OC=0.00045 8$PC=1.5E-5 7 161DY G 212.8 2 0.00038 18E1 0.0413 161DYS G KC=0.0349 5$LC=0.00504 8$MC=0.001101 16$NC+=0.000290 5 161DYS G NC=0.000252 4$OC=3.56E-5 5$PC=1.78E-6 3 161DY L 366.968 7 1/2- D 161DY B 0.065 5 8.55 4 C 161DYS B EAV=62.3 5 161DY G 292.401 7 0.57 3 [M1,E2] 0.10 3 C 161DYS G KC=0.08 3$LC=0.0142 5$MC=0.00320 6$NC+=0.000840 25 161DYS G NC=0.000734 17$OC=0.000102 8$PC=4.5E-6 18 161DY G 341.40 5 0.034 3 [E2] 0.0438 161DYS G KC=0.0335 5$LC=0.00792 11$MC=0.00181 3$NC+=0.000469 7 161DYS G NC=0.000413 6$OC=5.49E-5 8$PC=1.79E-6 3 161DY L 418.238 9 3/2- D 161DY B 0.0331 21 8.49 3 161DYS B EAV=47.2 4 161DY G 286.481 9 0.140 5 M1+E2 -0.096 20 0.1272 161DYS G KC=0.1074 16$LC=0.01554 22$MC=0.00341 5$NC+=0.000911 13 161DYS G NC=0.000789 11$OC=0.0001155 17$PC=6.62E-6 10 161DY CG MR from G(THETA), (1983Ri15). 161DY G 315.1 1 0.0054 12 161DY G 343.63 7 0.130 10M1(+E2) -0.07 8 0.0785 13 C 161DYS G KC=0.0664 11$LC=0.00953 14$MC=0.00209 3$NC+=0.000558 8 161DYS G NC=0.000483 7$OC=7.09E-5 11$PC=4.08E-6 7 161DY CG MR from G(THETA) (1983Ri15). 161DY G 392.57 8 0.0206 13 161DY L 451.455 24 5/2- D 161DY B 0.0100 11 8.73 5 161DYS B EAV=37.7 4 161DY G 84.73 10 0.0041 15[E2] 5.07 161DYS G KC=1.648 24$LC=2.63 4$MC=0.632 10$NC+=0.1586 24 161DYS G NC=0.1416 22$OC=0.0169 3$PC=6.86E-5 10 161DY G 238.57 4 0.0222 12 161DY G 319.66 3 0.0324 24M1 0.0953 161DYS G KC=0.0805 12$LC=0.01157 17$MC=0.00254 4$NC+=0.000678 10 161DYS G NC=0.000587 9$OC=8.61E-5 12$PC=4.96E-6 7 161DY G 348.2 2 0.0056 8 161DY G 376.81 17 0.0060 6 M1,E2 0.047 15 161DYS G KC=0.039 14$LC=0.0066 10$MC=0.00146 18$NC+=0.00039 6 161DYS G NC=0.00034 5$OC=4.7E-5 8$PC=2.3E-6 10 161DY G 425.80 14 0.0029 5 161DY L 550.236 15 3/2+ F 161DY B 0.064 4 6.33 6 161DYS B EAV=10.9 4 161DY G 418.47 6 0.079 4 [E1] 0.00771 161DYS G KC=0.00655 10$LC=0.000908 13$MC=0.000198 3$NC+=5.24E-5 8 161DYS G NC=4.55E-5 7$OC=6.55E-6 10$PC=3.54E-7 5 161DY CG MR from G(THETA), MR=-0.007 45 (1983Ri15). 161DY G 475.658 19 0.178 12[E1] 0.00574 C 161DYS G KC=0.00489 7$LC=0.000673 10$MC=0.0001466 21$NC+=3.89E-5 6 161DYS G NC=3.37E-5 5$OC=4.87E-6 7$PC=2.66E-7 4 161DY CG MR from G(THETA), MR=-0.004 17 (1983Ri15). 161DY G 506.68 16 0.0083 6 [E2] 0.01464 161DYS G KC=0.01180 17$LC=0.00221 4$MC=0.000497 7$NC+=0.0001302 19 161DYS G NC=0.0001138 16$OC=1.572E-5 22$PC=6.61E-7 10 161DY G 550.249 27 0.355 18 M1+E2 0.018 6 161DYS G KC=0.015 5$LC=0.0023 6$MC=0.00050 11$NC+=0.00013 3 161DYS G NC=0.00012 3$OC=1.7E-5 5$PC=9.E-7 4 161DY CG MR reported values disagree. From G(THETA), 1983Ri15 report 161DY2CG MR=-0.040 35 or -3.8 +4-7 (1983Ri15). From 160DY(N,G), 1986Sc16 161DY3CG report %E2=43 19.