51V 51CR EC DECAY 2005Ya01,2000He14 17NDS 201709
51V H TYP=FUL$AUT=Wang Jimin and Huang Xiaolong$CIT=NDS 144, 1 (2017)$
51V 2 H CUT=1-Mar-2016$
51V c Others: 1955Bu01, 1955Co56, 1963MeZZ, 1965Dh01, 1965Le24, 1969Dr01,
51V 2c 1970Ri11, 1973De60, 1973Wi10, 1980Sc07, 1984Fi10, 1985De50, 1986Ca08,
51V 3c 1991Ba11, 1994Ko34.
51V c Source generally produced by {+51}V(p,n) and {+50}Cr(n,|g).
51V c 2010Mo01: measured x-ray and |g emission probabilities, HPGe planar
51V 2c or REGe spectrometers.
51V c 2007Ya02: measured K X-ray intensity ratio, Si(Li).
51V c 2005Ya01: measured x-ray and |g emission probabilities, Si(Li).
51V c 1994Ko34: measured |g(x-ray)-coin, deduced x-ray emission
51V 2c probabilities and |g emission probability.
51V c 1991Ba11: measured |g|g-coin, deduced |g emission probability.
51V c 1984Fi10: absolute measurement of branching ratio for |e decay of
51V 2c {+51}Cr to {+51}V(320|g). {+51}Cr yields were determined with
51V 3c calibrated 4|p neutron counter (activation accuracy 1%). 320|g with
51V 4c calibrated Ge(Li) detector (efficiency accuracy 1%). Deduced I|b.
51V c 1975Bo07: fractometer. E|g measured.
51V c 1980Sc07: |g-ray emission probability for {+51}Cr |e decay to {+51}V
51V 2c (320|g) measured. The measurements were carried out with a
51V 3c pressurized 4|p proportional counter for the x-radiation, conversion
51V 4c and Auger electrons, and a NaI(Tl) detector for the |g-radiation.
51V c An independent evaluation of this decay was carried out by E.
51V 2c Schonfeld and R. G. Helmer, updated by V.P.Chechev and N.K.Kuzmenko
51V 3c as part of the international Decay Data Evaluation Project (DDEP).
51V 4c Since the results are very similar, they are included in this
51V 5c comment, rather than replacing the data set. From the analysis of 21
51V 6c half-life values, a result of 27.704 d {I4} is obtained. From 9
51V 7c values, the intensity of the 320-keV |g ray is deduced to be 9.89
51V 8c {I2}. The |g-ray energy reference of 1994HeZZ can be replaced with
51V 9c 2000He14 and the half-life reference of 1991UnZZ,1992Un01 can be
51V ac replaced by 2002Un02. The details of this evaluation will be
51V bc published by M.-M. Be in a report from the Laboratoire National Henri
51V cc Becquerel.
51V cG $I(K x-ray)=22.8% {I3} (1991BaZS), 23.2% {I3} (1994Ko34), 22.6% {I7}
51V 2cG (2010Mo01)
51V CG $Measured V XK intensity ratios: XKA2/XKA1=0.5026 13,
51V 2CG XKB1/XKA1=0.1104 22; XKB/XKA=0.1166 9 (2007Ya02).
51V cL E$From E|g
51V cL J$From adopted levels.
51V cE IE$From intensity imbalance
51V cG E$From 2000He14.
51V cG M,MR$From adopted |g radiations.
51V tG X Rays(2005Ya01):
51V 2tG E(x Ray) I(x Ray)
51V 3tG 4.95 6.99 {I1} K|a{-2}| x ray
51V 4tG 4.95 13.37 {I1} K|a{-1}| x ray
51V 5tG 5.43 1.56 {I1} K|b{-1} x ray
51V tG X Rays(2010Mo01):
51V 2tG E(x Ray) I(x Ray)
51V 3tG 4.95 20.0 {I7} K|a x ray
51V 5tG 5.43 2.57 {I9} K|b x ray
51CR P 0.0 7/2- 27.704 D 3 752.45 21
51V N 1.0 1 1 1
51V PN 3
51V L 0.0 7/2- STABLE
51V E 90.070 105.3910 3 90.070 10
51V S E CK=0.8919$CL=0.09268$CM+=0.01541
51V L 320.0835 4 5/2-
51V G 320.0824 4 9.91 1 M1+E2 +0.47 3 0.001815
51V S G KC=0.00164 5$LC=0.000151 4$MC=1.98E-5 6$NC=1.01E-6 3
51V cG CC$other: |a(K)exp=0.00153 {I3}, |a(exp)=0.00169 {I5} (1984HaZS). See
51V 2cG also 1973Wi10, 1970Ri11, 1970Ca17, 1969Dr01, 1968Ri17, and 1969WiZW.
51V cG E$others: 320.082 {I6} (1975Bo07, original value was 320.0761 {I55}
51V 2cG relative to E|g=411.794 for the Au standard)
51V cG RI$from weighted average of 9.8 {I6} (1955Bu01), 9.72 {I15}
51V 2cG (1963MeZZ), 10.20 {I63} (1965Dh01), 9.75 {I20} (average of 2 values,
51V 3cG 1965Le24), 10.2 {I10} (1970Ri11), 9.85 {I9} (1980Sc07), 10.30 {I19}
51V 4cG (1984Fi10), 9.86 {I8} (1991Ba11), 9.96 {I9} (1994Ko34), 9.91 {I1}
51V 5cG (2005Ya01), 9.87 {I3} (2010Mo01). Others: AP 2 (1940Wa02), 3
51V 6cG (1945Br02), 8 (1952Ly17), 21 (1952Ma49), 9.8 (1955Bi29), 9 {I1}
51V 7cG (omitted as outlier, 1955Co56), 10.1 {I3} (1980Sc07).
51V E 9.930 105.8631 7 9.930 10
51V S E CK=0.8910$CL=0.09347$CM+=0.01556