ADOPTED LEVELS for 77Y
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 30-SEP-2020
Authors: Balraj Singh, Ninel Nica | Citation: Nucl. Data Sheets 113, 1115 (2012) | Cutoff date: 30-Mar-2012
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-14400 keV SY | S(n)= 16030 keV SY | S(p)= -520 keV SY | Q(α)= -2780 keV SY | ||
Reference: 2017WA10 |
E(level) (keV) | Jπ(level) | T1/2(level) |
0 | (5/2+) | 57 ms +22-12 % ε = 100 % εp = ? % p = ? |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | (5/2+) | 57 ms +22-12 % ε = 100 % εp = ? % p = ? | From detection of β+ and γ events, 2002Fa13 conclude that β+ decay mode is dominant while proton emission branch is expected to be small. The ground state is probably unbound towards proton emission. E(level): From detection of β+ and γ events, 2002Fa13 conclude that β+ decay mode is dominant while proton emission branch is expected to be small. The ground state is probably unbound towards proton emission. |
1989HoZG (also 1989HoZK): tentative evidence of production of 77Y in 40Ca(40Ca,p2n) reaction at 100 MeV. Search for delayed protons from the decay of 77Y within a T1/2 range of 10-100 μs and proton energy range of 25-600 keV proved negative
1999Ja02 (also 1997Re12): identification of 77Y in Ni(92Mo,X) reaction at E=60 MeV/nucleon, followed by mass and charge analysis at GANIL facility using LISE3 spectrometer. Measured lower limit of half-life. Microscopic-macroscopic calculations and systematics to estimate spin-parity of g.s.
2002Fa13, 2001Ki13: production of 77Y in 9Be(112Sn,X) at 1 GeV/nucleon, GSI facility using fragment separator. Measured β+ particles, γ rays, βγ coin, isotopic half-life. 2007WeZX is a preprint of the results reported in 2002Fa13 and 2001Ki13
Theoretical calculations: consult the NSR database at www.nndc.bnl.gov for three primary theory references dealing with nuclear structure calculations.
Q-value: Estimated uncertainties (2017Wa10): 450 for Q(β-), 360 for S(n), 200 for S(p), 290 for Q(α)
Q-value: S(2n)=30760 360, S(2p)=3800 200, Q(εp)=6750 200 (syst, 2017Wa10)