86SR 86RB B- DECAY (18.671 D) 2016MA49,2021Kr05 25NDS 202507
86SR H TYP=FUL$AUT=A. Negret and B. Singh$CIT=NDS 203, 283 (2025)$
86SR2 H CUT=20-Jan-2025$
86SR c 2021Kr05: SrO and SrCO{-3} samples irradiated at the Oregon State
86SR2c University TRIGA reactor. Measured E|g, I|g, |g(t)
86SR3c using HPGe detectors.
86SR c 2016Ma49: measured E|g, absolute I|g, half-life of {+86}Rb decay,
86SR2c I|g/I|b using 4|p|b|g coin system at the Czech Metrology Institute.
86SR c 1991Mi04 (previous study by 1981Mi10): measured emission probability
86SR2c of the 1077-keV |g-ray by 4|p|b|g-coin system at Nagoya University,
86SR3c Japan.
86SR c Theory references for {+86}Rb decay: 1986Ci02, 1985To18, 1965Si10,
86SR2c 1964Wa21
86SR d Other theory references for decay of {+86}Rb: 2017Na01, 2017Un01,
86SR2d 2014Ej01, 1975Em02, 1972Ej01, 1970Ab08, 1970Ba45, 1970Ko20.
86SR cB ${+86}Rb decays by |e also with %|e=0.0052
86SR cB $|b{-1} end-point energy: 1964Da16, 1966An10, 1975Be21, 1975Ra09.
86SR2cB Others: 1965Th07, 1956Be47, 1956La24, 1954Po26, 1954Dm33, 1954Ca18,
86SR3cB 1953Ma75, 1952Mo29, 1951Ma75, 1950Mu67, 1948Za02
86SR cB $|b{-2} end-point energy: 1968Da12, 1966An10. Others: 1965Th07,
86SR2cB 1958Ro62, 1956Be47, 1956La24, 1954Po26, 1954Dm33, 1953Ma75,
86SR3cB 1951Ma75, 1950Mu67, 1948Za02
86SR cB $|b{-1} shape: 1980HuZS, 1975Ra09, 1975Be21, 1966An10, 1965Th07,
86SR2cB 1956La24, 1956Be47, 1954Po26, 1953Ma75, 1954Dm33, 1952Mo29,
86SR3cB 1950Mu67, 1948Za02. Small deviations from the unique first-forbidden
86SR4cB shape: 1964Da16
86SR cB $|b{-2} shape: 1969LaZW, 1968Da12, 1966An10, 1966Sp06, 1965Th07,
86SR2cB 1961De26, 1958Ro62, 1956La24, 1954Po26, 1950Mu67
86SR DB $For theoretical discussions of B-spectrum shapes, see 1975Be21,
86SR2DB 1975Em02, 1974Ap02, 1972Ej01, 1971Ma43, 1970Ab08, 1965Si09, 1964Wa21.
86SR cB $|b|g(t): 1955Be48
86SR cB $|b|g(|q): 1974Ap02, 1970De20, 1969LaZW, 1966Ra07,
86SR2cB 1965Si09, 1963Al24, 1961Ha18, 1961De26, 1960Pe06, 1960Fi02, 1959Kl45,
86SR3cB 1953Ma75, 1951St59
86SR DB $BG(THETA) Theory: 1974Ap02, 1971Ma43, 1970Ba45, 1970SmZY,
86SR2DB 1970Ko20, 1965Si10, 1964Wa21, 1963Ei05.
86SR cB $|b|g(lin pol): 1953Ha40
86SR cB $|b|g(CP): 1974Ap02, 1971Bo11, 1969Me02, 1969Vi04,
86SR2cB 1968Da12, 1966Re14, 1965Kn04, 1965Si09, 1963Bo20, 1958Bo72, 1953Ha40
86SR DB $BG(CP) Theory: 1974Ap02, 1971Ma43, 1971Bo11, 1970SmZY,
86SR2DB 1970Ba45, 1970Ko20, 1965Si10, 1964Wa21 and 1963Ei05.
86SR cB $|b(longitudinal pol): 1959Jo24
86SR cB $Inner bremsstrahlung spectrum: 1985Ba58
86SR cB $|e/|b{+-}: 1968Al02
86SR cB $Shell model wave functions extracted from |b decay
86SR2cB observables by 1974Ap02. Influence of core polarization on the
86SR3cB transition matrix elements calculated by 1972Ej01.
86SR cG $I|g/I(|b{+-}): 2016Ma49, 1991Mi04, 1981Mi10, 1965Gu06, 1962Br15,
86SR2cG 1960Ca18, 1955Em04, 1954Ly41
86SR cG $E|g: 2016Ma49, 1967Vr07, 1967Pi03, 1966An10, 1965Ma09, 1963Ha41,
86SR2cG 1954Po26, 1954Dm33, 1953Ma75, 1950Mu67, 1948Za02
86SR cG $|g(circ pol): 1963Bo20
86SR cG $No K| x ray (<0.1%): 1953Sc39
86SR cL J$From the Adopted Levels
86SR N 0.08855 29 0.999948 51.000053
86SR cN NR$From weighted average of I|g/I|b(total)=0.0874 {I7} (2016Ma49,
86SR2cN 4|p|b|g coin); 0.08884 {I29} (1991Mi04, 4|p|b|g coin, earlier value
86SR3cN from the same group was 0.0864 {I4} in 1981Mi10, 4|p|b|g coin);
86SR4cN 0.089 {I3} (1965Gu06, 4|p|b|g coin); 0.0879 {I9} (1962Br15, 4|p|b and
86SR5cN |g counting); 0.087 {I2} (1960Ca18, 4|p|b|g coin)
86SR cN BR$|e/|b{+-}=5.2|*10{+-5} {I5} (1968Al02)
86SR PN 3
86RB P 0.0 2- 18.671 D 10 1776.10 20
86RB cP QP$From 2021Wa16.
86RB cP T$weighted average of 18.684 d {I9} (2016Ma49, decay
86RB2cP curve of |g radiation for 61 runs using a chemically-purified source
86RB3cP supplied by POLATOM); 18.631 d {I18} (1981Mi10), 18.82 d {I11}
86RB4cP (1972Em01), 18.61 d {I4} (1971Ba28), 18.82 d {I11} (1967Gl05),
86RB5cP 18.68 d {I7} (1957Wr37), 18.64 d {I4} (1955Ni09), 18.66 d {I3}
86RB6cP (1955Em20). Others: 18.7 d 5 (1958Ro62), 19.5 d (1948Za02),
86RB7cP 19.5 d (1941He02), 18 d (1937Sn02).
86RB dP T$2021Ko07 (NUBASE2020) gives 18.645 {i8} d, calculated as a weighted
86RB2dP average of 18.648 {i9} (2016Ma42) and 18.631 {i18} (1981Mi10).
86SR L 0.0 0+ STABLE
86SR B 91.141 29 9.45773 40 1U
86SRS B EAV=702.48 9
86SR cB E$1774.6 {I30} from weighted average of 1774 {I5} (1964Da16), 1770 {I3}
86SR2cB (1966An10), 1779 {I3} (1975Be21) and 1775 {I3} (1975Ra09). Others:
86SR3cB 1965Th07, 1956La24, 1954Po26, 1953Ma75, 1952Mo29.
86SR cB $Spectrum shape: unique first-forbidden (1965Th07,1956La24,1956Be47,
86SR2cB 1954Po26, 1953Ma75, 1954Dm33, 1952Mo29, 1950Mu67, 1948Za02). Small
86SR3cB deviations from the unique first-forbidden shape: 1964Da16
86SR L 1076.785 10 2+ 1.46 PS +9-8
86SR cL E$from E|g
86SR cL T$from Adopted Levels, Gammas. 1955Be48 measured T{-1/2}|<70 ps from
86SR2cL |b|g(t).
86SR B 8.859 29 7.9408 15 C
86SRS B EAV=234.65 9
86SR cB E$700 {I5} from weighted average of 702 {I4} (1966An10), 689 {I9}
86SR2cB (1968Da12). Others: 1965Th07, 1956La24, 1954Po26, 1950Mu67
86SR cB $Spectrum shape: 1969LaZW, 1968Da12, 1966An10, 1966Sp06,
86SR2cB 1965Th07, 1961De26, 1958Ro62, 1956La24, 1954Po26, 1950Mu67
86SR G 1076.785 10 100 E2 4.89E-4 7
86SRS G KC=0.000433 6$LC=4.70E-5 7$MC=7.89E-6 11
86SRS G NC=9.89E-7 14$OC=6.41E-8 9
86SR cG E$from 2021Kr05. Others: 1076.772 {i75} (2016Ma49), 1077.1 {I7}
86SR2cG (1967Pi03), 1075.3 {I12} (1965Ma09), 1077.2 {I5} (1963Ha41).
86SR cG M$from the Adopted Gammas