46TI 46SC B- DECAY 1978HE21 00NDS 200102
46TI H TYP=UPD$AUT=R. Helmer$CIT=ENSDF$CUT=01-JAN-2000$DAT=15-FEB-2001$
46TI2 H COM=Update of decay data
46TI H TYP=FUL$AUT=S. -C. WU$CIT=NDS 91, 1 (2000)$CUT=15-Jul-2000$
46TI tG $|g energy measurements:
46TI tG Ge(Li) detector (1978He21).
46TI tG Bent-crystal spectrometer (1972Ga37).
46TI tG $|a measurements:
46TI tG Iron-free double-focusing magnetic spectrometer (1962Fr13).
46TI tG High-resolution |b spectrometer (1954Ke28).
46TI tG Thin-lens magnetic spectrometer (1954St08 and 1950Mo62).
46TI c (889|g)(1120|g)(|q): A{-2}=+0.1003 {I18}, A{-4}=+0.0103 {I26} from
46TI2c 1967Ga13, 1966Mi03, 1964Ha12, 1964Ge06, 1963Si06, 1962La11, 1956Be75.
46TI c |b|g circular-polarization correlation measured by scattering of |g's
46TI2c in magnetized iron; asymmetry parameter A=0.13 {I2} (1966Mi03). For
46TI3c summary of 15 previous measurements, see 1966Mi03.
46TI cG $|g's measured with Be+BF{-3} photo-neutron detector
46TIxcG (1980Fu07,1949Fl05).
46TI tB $|b energy measurements:
46TI tB $ Liquid scin plus 2 NaI detectors, |b|g|g triple coin (1969Pr11)
46TI tB Double lens magnetic spectrometer (1956Wo09).
46TI tB Semi-circular |b spectrometer (1953Yo03).
46TI c Plastic plus NaI detector system (1976Kl04); measured |g|g(t) by
46TI2c centroid shift. For summary of 9 previous T{-1/2} measurements of 889
46TI3c level, see 1976Kl04.
46TI c Plastic scintillators (1970Be61,1963Le15); measured |b|g(t).
46TI c NaI detector (1963Ak01); resonant scattering of |g's vs source
46TI2c temperature to measure T{-1/2}.
46TI c An independent evaluation of this decay was carried out
46TI2c by R. G. Helmer as part of the international Decay Data
46TI3c Evaluation Project. Since the results are very similar to those
46TI4c given in this data set, they are included in this comment, rather
46TI5c than replacing the data set. From the analysis of 5 half-life
46TI5c values by three different methods (1985ZiZY 1992Ra08) ,
46TI6c a result of 83.788 d {I22} is obtained. The intensities
46TI7c of the 889- and 1120-keV |g rays are deduced to be 99.9833 {I5}
46TI8c and 99.986 {I+4-36}, respectivively. The |g-ray energies can
46TI9c be replaced by 889.271 {I2} and 1120.537 {I3} from the
46TI0c 2000He14 evaluation. The details of this evaluation will be
46TIAc published by M.-M. Be in a report from the Laboratoire National
46TIBc Henri Becquerel.
46TI cL J Based on |g|g(|q) and |g multipolarities.
46TI cG E From 1978He21.
46TI cG M From |a measurements (all references).
46TI N 1.0 1.0 1.0 1.0
46TI PN 4
46SC P 0.0 4+ 83.79 D 4 2366.7 7
46SC cP Since Q(|b{++})=1379 {I4}, an energy of 33 {I4} is available
46SC2cP for |e decay to the 1346.0 {I3} J|p=2+ level of {+46}Ca. For an
46SC3cP assumed log| {Ift}=13 this |e branch would be |?7|*10{+-11} and very
46SCxcP difficult to measure.
46TI L 0.0 0+
46TI L 889.286 3 2+ 4.69 PS 34
46TI cL T weighted average of 4.65 ps {I35} (1976Kl04) and
46TI2cL 5.45 ps {I145} (1963Ak01).
46TI B 1475 6 3.6E-3 7 12.94 9
46TIS B EAV=580.8 4
46TI cB E,IB from 1956Wo09.
46TI G 889.277 3 99.984 1 E2 0.00017 100
46TI cG |a(exp)=1.60|*10{+-4} {I7} (1962Fr13)
46TI L 2009.846 5 4+
46TI cL T >2.3<8.7 ps (1970Be61), <3.5 ps (1963Le15); from
46TIxcL |b|g(t).
46TI B 357 3 99.9964 7 6.200 3
46TIS B EAV=111.8 3
46TI cB E weighted average of values from 1969Pr11 and 1953Yo03.
46TI G 1120.545 4 99.987 1 E2 100
46TI cG |a(exp)=0.95|*10{+-4} {I4} (1962Fr13)
46TI G 2010 1.3E-5 10
46TI cG E assumed from decay scheme and photo-neutrons from Be.
46TI cG RI from 1980Fu07.