ADOPTED LEVELS, GAMMAS for 84Mo
Author: B. Singh | Citation: Nucl. Data Sheets 110,2815 (2009) | Cutoff date: 30-Sep-2009
Full ENSDF file | Adopted Levels (PDF version)
S(n)= 1.59×104 keV SY | S(p)= 3.4×103 keV SY | Q(α)= -1.4×103 keV SY | |||
Reference: 2012WA38 |
References: | |||
A | 58Ni(28Si,2nγ),28Si(58Ni,2nγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | Final Levels | |
0.0 | A | 0+ | 2.3 s 3 % ε = 100 % εp = ? | |||
443.9 2 | A | (2+) | 443.9 2 | 0.0 | 0+ | |
1117.3 6 | A | (4+) | 673.4 5 | 443.9 | (2+) | |
2006.4 8 | A | (6+) | 889.1 6 | 1117.3 | (4+) | |
3069.4 10 | A | (8+) | 1063.0 6 | 2006.4 | (6+) | |
4276.4 15 | A | (10+) | 1207 1 | 3069.4 | (8+) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | Final Levels | |||
Band 1 - Yrast (g.s.) band. | |||||||
0.0 | 0+ | 2.3 s 3 % ε = 100 % εp = ? | |||||
443.9 2 | (2+) | 443.9 2 | 0.0 | 0+ | |||
1117.3 6 | (4+) | 673.4 5 | 443.9 | (2+) | |||
2006.4 8 | (6+) | 889.1 6 | 1117.3 | (4+) | |||
3069.4 10 | (8+) | 1063.0 6 | 2006.4 | (6+) | |||
4276.4 15 | (10+) | 1207 1 | 3069.4 | (8+) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 2.3 s 3 % ε = 100 % εp = ? | T=0 Delayed proton decay is possible but none has been studied. E(level): Yrast (g.s.) band. Jπ(level): Members of the yrast band based on g.s.; systematics of yrast structures of n=Z nuclei. |
443.9 | (2+) | E(level): Yrast (g.s.) band. Jπ(level): Members of the yrast band based on g.s.; systematics of yrast structures of n=Z nuclei. | |
1117.3 | (4+) | E(level): Yrast (g.s.) band. Jπ(level): Members of the yrast band based on g.s.; systematics of yrast structures of n=Z nuclei. | |
2006.4 | (6+) | E(level): Yrast (g.s.) band. Jπ(level): Members of the yrast band based on g.s.; systematics of yrast structures of n=Z nuclei. | |
3069.4 | (8+) | E(level): Yrast (g.s.) band. Jπ(level): Members of the yrast band based on g.s.; systematics of yrast structures of n=Z nuclei. | |
4276.4 | (10+) | E(level): Yrast (g.s.) band. Jπ(level): Members of the yrast band based on g.s.; systematics of yrast structures of n=Z nuclei. |
E(level) | E(gamma) | Comments |
84Mo evaluated by B. Singh
2007WeZX, 2002Fa13, 2001Ki13: 84Mo isotope formed in the fragmentation of 112Sn beam at 1 GeV/nucleon with nickel target using fragment separator FRS at GSI facility. Measured positrons, γ rays and isotopic half-life. These measurements are also described in two Ph.d. theses from the University of Munich in 2001 by E. Wefers and α. Stolz
2001Ga24: 84Mo produced by fragmentation of 92Mo beam at 60 MeV/nucleon with nickel target at GANIL facility using LISE3 separator. Measured positrons as a function of time and suggested that 84Mo half-life is in the range of few seconds. The authors quoted half-life of 3.6 s 7 from a conference report by the GSI group (2002Fa13)
2009St04: E=140 MeV/nucleon 124Xe beam provided by coupled K500 and K1200 cyclotrons at NSCL, MSU. A1900 fragment separator used to analyze and separate 84Mo fragments which were then implanted on double-sided silicon strip detector for β counting. Measured prompt and delayed γ rays using SeGA array of 16 Ge detectors. The half-life was measured from β decay events of 366 decay chains. From βγ coin measurements, no γ rays could be assigned to 84Nb
This nuclide is important from structure point-of-view for several reasons e.g. n=Z nucleus and subsequent description of deformation trends; t=0 n-p pairing interaction; astrophysical significance as a ’waiting-point’ nuclide in the rp process of nucleosynthesis in x-ray bursts, etc.
Structure calculations (deformation, yrast levels, etc.): 2006Sa25 (also 2006Sa45) (half-life=1-2 s); 2004Su08 (β2 of ≈0.28), 2004Wa31 (β2=0.37)
Q-value: Note: Current evaluation has used the following Q record 15760 syst 3380 syst -1410 syst 2009AuZZ
Q-value: ΔS(n)=640, ΔS(p)=500, ΔQ(α)=1540 (syst,2009AuZZ).
Q-value: Q(εp)=4120 400 (syst,2009AuZZ)
Q-value: Values in 2003Au03 are: S(n)=16130 640, S(p)=4140 510, Q(α)=-2710 1540, Q(εp)=3360 410; all from systematics