220RN 220AT B- DECAY 1989LI04,1989BU09 26NDS 202609
220RN H TYP=FUL$AUT=J.Chen, M.S. Basunia P.Dimitriou, et al.,$
220RN2 H CIT=NDS 212, 18 (2026)$CUT=31-Mar-2026$
220RN c 1989Bu09: {+220}At produced with 600 MeV protons incident on {+232}Th
220RN2c targets, followed by mass separation at ISOLDE II. {+220}At was
220RN3c implanted on a moving aluminized Mylar tape. Measured betas using a
220RN4c 4|p plastic scintillator and E|g, I|g, |b|g using a Ge detector.
220RN c 1989Li04: {+220}At produced with 200 MeV protons incident on ThO{-2}
220RN2c targets, followed by on-line mass separation. {+220}At was implanted
220RN3c on a moving tape. Measured betas with a 4|p plastic scintillator and
220RN4c E|g, I|g, |g(t) using two Ge(Li) detectors (planar and coaxial).
220RN cB IB$Deduced by evaluators from |g-ray transition intensity balances.
220RN cG E,RI$From 1989Li04. Values from 1989Bu09 are provided in the comments.
220RN cG M$From the Adopted Gammas
220RN cL E$From a least-squares fit to E|g, by evaluators.
220RN cL J,T$From the Adopted Levels
220RN dG CC$FROM BrIcc v2.3e (17-Jun-2020) 2008Ki07, "Frozen Orbitals" appr.
220AT P 0.0 3 3.71 M 4 3764 14
220AT cP J,T$From Adopted Levels of {+220}At
220AT cP QP$From 2021Wa16
220RN N 0.75 6 0.920 20 1.08696
220RN cN NR$From |SI(|g+ce) to g.s.=92 {I2}, assuming no direct |b{+-} decay to
220RN2cN {+220}Rn g.s. considering |DJ=3.
220RN PN 3
220RN G 318.3 1 3.6 4
220RN G 533.8 2 2.9 4
220RN G 592.3 2 2.3 4
220RN G 668.0 2 4.4 5
220RN G 697.6 3 6.0 5
220RN cG E$evaluators note the similarity with the Adopted 696.9 {I10} gamma
220RN2cG from the 2+, 937.9 level.
220RN L 0.0 0+ 55.61 S 4
220RN L 240.97 1 2+ 0.146 NS 5
220RN G 240.97 1 100 8 E2 0.276 4
220RNS G KC=0.1109 16$LC=0.1220 17$MC=0.0324 5$NC=0.00843 12$OC=0.001725 24$
220RNS G PC=0.0002019 28
220RN cG E$other: 241.0 {I5} (1989Bu09)
220RN cG $%I|g=69.1 {I16}
220RN B 33 10 7.19 13
220RNS B EAV=1373 6
220RN L 533.68 4 4+ 46.1 PS 18
220RN G 292.71 3 43 2 E2 0.148721
220RNS G KC=0.0727 10$LC=0.0564 8$MC=0.01483 21$NC=0.00386 5$OC=0.000795 11$
220RNS G PC=9.50E-5 13
220RN cG E$other: 292.7 {I5} (1989Bu09)
220RN cG RI$other: 39 {I2} (1989Bu09)
220RN cG $%I|g=30 {I3}
220RN B 34 3 7.022 41
220RNS B EAV=1247 6
220RN L 645.74 9 1-
220RN G 404.8 1 2.4 4 [E1] 0.0171324
220RNS G KC=0.01398 20$LC=0.002402 34$MC=0.000567 8$NC=0.0001466 21$
220RNS G OC=3.16E-5 4$PC=4.42E-6 6
220RN cG E$other: 404.2 {I5} (1989Bu09)
220RN cG RI$other: 3 {I1} (1989Bu09)
220RN cG $%I|g=1.7 {I3}
220RN G 645.6 2 5.6 5 [E1] 0.006629
220RNS G KC=0.00545 8$LC=0.000894 13$MC=0.0002096 29$NC=5.43E-5 8$
220RNS G OC=1.177E-5 16$PC=1.678E-6 24
220RN cG E$other: 645.5 {I5} (1989Bu09)
220RN cG RI$other: 6 {I1} (1989Bu09)
220RN cG $%I|g=3.9 {I5}
220RN B 5.6 7 9.13 6 1U
220RNS B EAV=1135 6
220RN cB LOGFT$assumed first-forbidden unique
220RN L 663.23 4 (3)-
220RN G 422.26 3 27 3 E1 0.0156622
220RNS G KC=0.01279 18$LC=0.002187 31$MC=0.000516 7$NC=0.0001334 19$
220RNS G OC=2.88E-5 4$PC=4.03E-6 6
220RN cG E$other: 420.5 {I5} (1989Bu09)
220RN cG RI$other: 23 {I2} (1989Bu09)
220RN cG $%I|g=19 {I3}
220RN B 19 4 7.21 9
220RNS B EAV=1191 6