ADOPTED LEVELS, GAMMAS for 34Si
Authors: Ninel Nica, Balraj Singh | Citation: Nucl. Data Sheets 113, 1563 (2012) | Cutoff date: 28-May-2012
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=4592 keV 15 | S(n)= 7514 keV 15 | S(p)= 1.878×104 keV 8 | Q(α)= -13498 keV 15 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 34Al β- decay (56.3 MS) | B | 35Al β-n decay (37.7 MS) |
| C | 2H(34Si,34Si’γ) | D | 7Li(34P,7BeG) |
| E | 9Be(35Si,34SIXG) | F | SI(34Si,34Si’γ) |
| G | 36S(11B,13N) | H | 36S(14C,16O) |
| I | 160Gd(36S,xγ) | J | Coulomb Excitation |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCDEFGHIJ | 0+ | 2.77 s 20 % β- = 100 | |||||
| 3327.14 20 | ABCDEF IJ | 2+ | 82 fs 32 | 3326.96 20 | 100 | [E2] | 0.0 | 0+ |
| 3590 25 | H | |||||||
| 4256.1 4 | ABCDEF I | (3-) | < 210 ns | 929.0 3 4257 3 | 100 10 22 3 | [E3] | 3327.14 0.0 | 2+ 0+ |
| 4380.2 4 | ABCDE I | (3-) | 124.2 3 1052.8 4 | 100 8 7.5 12 | [M1+E2] | 4256.1 3327.14 | (3-) 2+ | |
| 4520.2 11 ? | A CDE | 1193.34 20 | 100 | 3327.14 | 2+ | |||
| 4971.1 5 | A CDE | (3-,4-,5-) | 590.9 3 | 100 | 4380.2 | (3-) | ||
| 5042.2 11 ? | A CDE | 1715.4 8 | 100 | 3327.14 | 2+ | |||
| 5330.4 10 | D G | 2+ | 2000? 5330 | 59 9 100 | 3327.14 0.0 | 2+ 0+ | ||
| 6023.3 11 ? | A CDE | 2696.4 12 | 100 | 3327.14 | 2+ | |||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 3327.14 | 2+ | 82 fs 32 | 3326.96 20 | [E2] | B(E2)(W.u.)=2.6 10 | |
| 4380.2 | (3-) | 124.2 3 | [M1+E2] | 0.025 | α=0.025 23, α(K)=0.023 22, α(L)=0.0017 16 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 2.77 s 20 % β- = 100 | Measured r20=1.23 fm2 4 (2006Kh08) in Si(34Si,X) reaction at 51.5 MeV/nucleon and 58.9 MeV/nucleon. Integral cross sections were also measured. E(level): Measured r20=1.23 fm2 4 (2006Kh08) in Si(34Si,X) reaction at 51.5 MeV/nucleon and 58.9 MeV/nucleon. Integral cross sections were also measured. |
| 4380.2 | (3-) | XREF: E(?). | |
| 4971.1 | (3-,4-,5-) | XREF: E(?). | |
| 5330.4 | 2+ | Deduced B(>)=0.74 18(stat) +00-14(syst) (7Li(34P,7Beγ)). |
| E(level) | E(gamma) | Comments |
| 4256.1 | 4257 | I(γ): other: Iγ(4257)/Iγ(929)=0.53 4 in 2H(34Si,34Si’γ) is too high by a factor of ≈2 |
Identifications and production of 34Si: 1971Ar32 in 232Th(40Ar,X) at E=290 MeV. Later study: 1977Na05
2008Wi09: 208Pb(36S,X) E=230 MeV. Measured Eγ using GAMMASPHERE array and CHICO arrays at ANL. The known γ rays of 125, 591, 930, 3326 and 4255 keV were observed in this work. Main study was for 35P structure
Measurement of strong absorption radius: 2006Kh08, 1999Ai02
Structure calculations: 2009Bo16 (negative-parity intruders, shell model); 2009Gr04 (binding energy, charge radius, neutron density, shell model); 2007Co22 (binding energy, single proton transfer reactions); 2002St30 (shell closure effects); 2002Ut02 (levels, spins, shell model); 2001Ca49 (levels, spins, B(E2), shell model); 2000Pe27 (shell closure features); 2000Ro08 (2+ levels, B(E2)); 1994Po05 (intruder levels);
1999Ai02: measurement of strong absorption radius; Si(34P,X) reaction at 38-80 MeV/nucleon, NSCL facility. The 34P beam was obtained from fragmentation of 55Mn beam with 9Be target at 50-90 MeV/nucleon.
1986Sm05, 1985Wo07: 64Ni(36S,34Si) E=198 MeV. Measured σ, deduced mass excess
Nuclear structure theoretical calculations:
1992Fu07: pf-shell occupation numbers, vanishing of n=20 shell gap
1991He06: intruder states
1988Wa04: levels, decay scheme parameters, shell model
Levels: α 2133, (0+) level proposed in 2001Nu01 but not confirmed by 2002Mi44 and 2003Iw02 is omitted here. The 1193 transition feeding from 3326 level to a 2133 level is placed from a 4519 level to 3326 level according to 2003Iw02
Q-value: Note: Current evaluation has used the following Q record 4592 14 7514 14 18809 70-13490 19 2011AuZZ
Q-value: S(2n)=12022 14, S(2p)=33623 23 (2011AuZZ)
Q-value: Values in 2003Au03: Q(β-)=4601 15, S(n)=7535 21, S(p)=18720 70, Q(α)=-13471 16, S(2n)=12018 14, S(2p)=33580 23