ADOPTED LEVELS, GAMMAS for 80Zr
Author: Balraj Singh | Citation: Nucl. Data Sheets 105, 223 (2005) | Cutoff date: 22-Jun-2005
Full ENSDF file | Adopted Levels (PDF version)
S(n)= 1.65×104 keV SY | S(p)= 4.4×103 keV 16 | Q(α)= -3.7×103 keV 15 | |||
Reference: 2012WA38 |
References: | |||
A | 24Mg(58Ni,2nγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
0.0 | A | 0+ | 4.6 s 6 % ε = 100 % εp = ? | ||||
288.9 2 | A | (2+) | 288.9 2 | 100 | 0.0 | 0+ | |
825.8 4 | A | (4+) | 536.9 3 | 100 | 288.9 | (2+) | |
1605.0 7 | A | (6+) | 779.2 5 | 100 | 825.8 | (4+) | |
2610.0 12 | A | (8+) | 1005 1 | 100 | 1605.0 | (6+) | |
3789.0 16 | A | (10+) | 1179 1 | 100 | 2610.0 | (8+) |
Jπ(level): From 2001Fi13 based on γ(θ) data and systematics of population of yrast sequence in even-even nuclei
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | Final Levels | ||
Band 1 - GS band | |||||||
0.0 | 0+ | 4.6 s 6 % ε = 100 % εp = ? | |||||
288.9 2 | (2+) | 288.9 2 | 100 | 0.0 | 0+ | ||
825.8 4 | (4+) | 536.9 3 | 100 | 288.9 | (2+) | ||
1605.0 7 | (6+) | 779.2 5 | 100 | 825.8 | (4+) | ||
2610.0 12 | (8+) | 1005 1 | 100 | 1605.0 | (6+) | ||
3789.0 16 | (10+) | 1179 1 | 100 | 2610.0 | (8+) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 4.6 s 6 % ε = 100 % εp = ? | β2≈0.4 (from energies of 2+ and 4+ states (1987Li14)). 1991Zh23 discuss this state in terms of superdeformation. E(level): GS band. |
288.9 | (2+) | E(level): GS band. | |
825.8 | (4+) | E(level): GS band. | |
1605.0 | (6+) | E(level): GS band. | |
2610.0 | (8+) | E(level): GS band. | |
3789.0 | (10+) | E(level): GS band. |
80Zr is an important ’waiting-point’ (n=Z) nuclide in the rapid-proton capture (rp) process and in x-ray burst simulations.
80Zr nucleus first identified through (evaporation residues)(prompt γ)-coin studies in 24Mg(58Ni,2nγ) reaction (1987LeZT,1987Li14). Same reaction used in 2001La31 in mass measurement and in 2000Re03 to study the yrast sequence of levels up to 10+
Other reactions for production of 80Zr:
2002Fa13, 2001Ki13: Fragmentation of 112Sn ion beam at 1 GeV/nucleon with Be target; fragment recoil separator
1998Is06: 98Al(58Ni,X) E=300 MeV. Measured mass, tof spectrometer
Mass measurement: 2001La31, 1998Is06
Q-value: Note: Current evaluation has used the following Q record 16230 syst 4.4×103 16 -3.7×103 15 2003Au03
Q-value: Δ(S(n))=1540; S(p)=4450 1560, Q(α)=3700 1490; Q(εp)=2670 1490 (2003Au03)