190IR 190IR IT DECAY (3.087 H) 1996GA30,1964HA06 20NDS 202011
190IR H TYP=FUL$AUT=Balraj Singh,{+1} and Jun Chen{+2}$CIT=NDS 169, 1 (2020)$
190IR2 H CUT=15-Oct-2020$
190IR c 1996Ga30: two measurements were performed: |g-ray and conversion
190IR2c electron measurements. In the first measurement, source was produced
190IR2c via {+192}Os(p,3n) with E=18-31 MeV proton beams from the
190IR3c Philips variable-energy cyclotron of the Paul Scherrer Institute
190IR4c (PSI) in Switzerland; |g rays were detected with the Fribourg
190IR5c Fribourg anti-Compton spectrometer utilizing a PGT Ge detector;
190IR6c measured E|g, I|g. In the second measurement, source was produced via
190IR7c {+192}Os(d,4n) with E=27.8 MeV deuteron beam from the isochronous
190IR8c cyclotron at the Institut fur Strahlen and Kernphysik (ISKP) of the
190IR9c University of Bonn; conversion electrons were momentum-analyzed with a
190IRac double-orange iron-free spectrometer and detected with a plastic
190IRbc scintillator and |g rays were detected with an LEPS detector; measured
190IRcc E(ce), I(ce), E|g, I(|g), ce-|g-coin, ce(t), ce-ce(t). Deduced
190IRdc levels, J, |p, half-lives, conversion coefficients, |g-ray
190IRec multipolarities.
190IR c 1964Ha06: source was produced from {+190}Os(p,n) with E=12-22 MeV
190IR2c proton beams from the ORNL 86-Inch cyclotron. Measured ce with a
190IR3c magnetic spectrograph. A 15% uncertainty from authors' statement has
190IR4c been assigned to measured I(ce) values by evaluators
190IR c Isomer ratio measurements: 1987Re05, 1984He15, 1975AvZM, 1972Ze02,
190IR2c 1972Qa01, 1970Bo22, 1967Fl14, 1963Gr22
190IR c Others (T{-1/2} and production): 1970Bo22, 1963Gr22, 1955At32, 1950Ch11
190IR cG $I(K|a{-1}| x ray)(Os)=47% {I7}, I(K|a{-2}| x ray)(Os)=27% {I4}
190IRxcG (1987Re05)
190IR cG E,RI,M$From 1996Ga30 with multipolarities deduced from ce data, unless
190IR2cG otherwise stated
190IR cL $The level scheme is from 1996Ga30
190IR cL E$From a least-squares fit to |g-ray energies.
190IR cL J$As proposed by 1996Ga30 based on ce data, with parenthesis added by
190IR2cL evaluators due to lack of firm experimental evidence, unless otherwise
190IR3cL noted. The same assignments are recommended in the Adopted Levels.
190IR P 376.4 1 (11)- 3.087 H 12
190IR N 0.347 6 0.347 6 0.086 2
190IR cN NR$From summed I(|g+ce)=100 for 135.35 and 205.21 transitions
190IR cN BR$From %|e=91.4 {I2} (as quoted in 1996Ga30 from 616|g intensity).
190IR2cN Other: %IT=5.6 {I8} (1964Ha06), from average of
190IR3cN ce(K)(148.7|g)/ce(K)(502.5|g in {+190}Os)=0.74 {I11}
190IR4cN and ce(M)(148.7|g)/ce(K)(502.5|g)=0.68 {I10}.
190IR PN 3
190IR L 0.0 4-
190IR cL J$spin=4 from observation of |e feeding to J=3, 4 and 5 levels in
190IR2cL {+190}Os by 1974Ya02; negative parity is assigned by 1996Ga30 based on
190IR3cL their measured ce data of 36.2|g, 56.1|g, 135.4|g and 205.2|g, that are
190IR4cL identified and assigned by 1996Ga30 as from the negative-parity 3.087-h
190IR5cL isomer.
190IR L 22.45 6-
190IR G 22.45 0.0086 4 E2 5.54E3 10 47.8 21 C
190IR cG TI$from I(|g+ce)(205|g)
190IR cG RI$from I(|g+ce) and calculated |a by BrIcc
190IRS G LC=4.19E3 8 $MC=1061 19 $NC=255 5 $ OC=38.4 7 $ PC=0.0324 6
190IR L 36.184 17 4+ 2 US GT M1
190IR cL T$estimated by 1996Ga30 from absence of 36.1-keV transition in
190IR2cL ce-|g-coin spectrum shown in their Fig. 5.
190IR G 36.184 17 91 5 E1 1.241 C
190IR2 G EL1C+EL2C=0.97 25 (1996GA30)
190IRS G LC=0.955 14 $MC=0.225 4$ NC=0.0532 8$ OC=0.00817 12$ PC=0.000281 4
190IR L 171.532 22 6+ 3.7 NS 1
190IR cL T$from ce-ce(t) (1996Ga30)
190IR G 135.348 14 100.0 19 E2 1.401 C
190IR2 G (EL1C+EL2C)/EL3C=1.41 9 (1996GA30)
190IRS G KC=0.438 7$LC=0.725 11$MC=0.186 3$NC=0.0450 7$
190IRS G OC=0.00691 10$PC=4.40E-5 7
190IR L 227.66 3 7+ 3.7 NS 2
190IR cL T$from ce-ce(t) (1996Ga30)
190IR G 56.128 23 36.4 22 M1 5.80 C
190IR2 G EL1C/EL2C=9.2 13 (1996GA30)
190IRS G LC=4.47 7 $MC=1.030 15 $ NC=0.253 4$ OC=0.0448 7$ PC=0.00337 5
190IR cG $|d(E2/M1)=0.04 {I+3-4} from L1/L2 ratio (using BrIccMixing code),
190IR2cG which gives |a(theory)=5.89 {I20}
190IR G 205.206 26 44.9 20 E1 0.0640 C
190IR cG $I(|g+ce)(205.2|g)/I(|g+ce)(56.1|g)=16.5 {I7}/83.5 {I7} (1996Ga30).
190IR2cG The photon intensity ratio of 205.2|g and 56.1|g are in severe
190IR3cG disagreement in IT decay (1996Ga30) and in {+192}Os(p,3n|g),(d,4n|g)
190IR4cG work (2000Ga03), both from the same group:
190IR5cG I|g(205.2)/I|g(56.1)=100.0 {I29}/56.6 {I29} in in-beam |g-ray study
190IR6cG (2000Ga03) versus 100.0 {I45}/81.1 {I49} in IT decay (1996Ga30)
190IR2 G EKC=0.07 2 $ EL1C+EL2C LE 0.025 (1996GA30)
190IRS G KC=0.0527 8$ LC=0.00870 13$ MC=0.00200 3$ NC=0.000486 7
190IRS G OC=8.28E-5 12 $ PC=5.00E-6 7
190IR L 376.4 11- 3.087 H 12 M2
190IR cL E$this isomer was proposed by 1964Ha06 to be at an energy of 175 keV
190IR2cL and to feed the 1.12-h isomer at E=26.1 keV by the 148.7|g transition
190IR cL J$11- is proposed by 1964Ha06 from their observation of a strong
190IR2cL allowed |e feeding (log{Ift}=4.8) to the (10)- isomer in {+190}Os and
190IR3cL possible configuration=|p11/2[505]+|n11/2[615], based on the
190IR4cL configuration of 10- isomer in {+190}Os.
190IR cL T$from ce(t) (1996Ga30). Others: 3.35 h {I20} (1970Bo22), 1963Gr22,
190IR2cL 1950Ch11
190IR G 148.7 1 0.62 4 M4 475 295 21 C
190IR cG TI$from I(|g+ce)(56.128|g+205.206|g)
190IR cG RI$from I(|g+ce) and calculated |a by BrIcc
190IR cG M$from K:L1:L3=50:40:100 (1964Ha06)
190IRS G K/T=0.216$L/T=0.558$M/T=0.169$N/T=0.0557
190IRS G KC=102.8 15$ LC=267 4$ MC=81.4 12$ NC=20.5 3$ OC=3.25 5$ PC=0.0955 14
190IR cG $Relative to ce(K)(502|g in {+190}Os)=100, ce(K)=70 {I11}, ce(L1)=56
190IR2cG {I9} (partially resolved), ce(L3)=140 {I21}, ce(M)=65 {I10}
190IR3cG (1964Ha06). The value of ce(K)(502|g) is the apparent intensity
190IR4cG observed in equilibrium with 3.2-h {+190}Ir