ADOPTED LEVELS, GAMMAS for 37Si
Authors: Jun Chen and Balraj Singh | Citation: ENSDF | Cutoff date: 31-MAY-2015
Authors: John Cameron, Jun Chen and Balraj Singh, Ninel Nica | Citation: Nucl. Data Sheets 113, 365 (2012) | Cutoff date: 15-Jan-2012
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=12400 keV 90 | S(n)= 227×101 keV 11 | S(p)= 1983×101 keV 13 | Q(α)= -13980 keV 80 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 37Al β- decay (10.7 MS) | B | 9Be(38Si,37SiG) |
| C | Coulomb Excitation | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | ABC | (5/2-) | 90 ms 60 % β- = 100 % β-2n = ? % β-n = 17 13 | |||||
| 68.2 14 | AB | (7/2-) | ||||||
| 155.4 12 | AB | (3/2-) | 3.0 ns 7 | 156 3 | 100 | [M1] | 0 | (5/2-) |
| 693 3 | B | (3/2-) | 538 4 692 4 | 100 9 60 8 | 155.4 0 | (3/2-) (5/2-) | ||
| 717 3 | AB | (3/2)+ | 562 4 717 4 | 100 6 42 4 | 155.4 0 | (3/2-) (5/2-) | ||
| 1270.2 10 | A | (5/2+) | 1115 1202 1270 | 88 25 69 25 100 25 | 155.4 68.2 0 | (3/2-) (7/2-) (5/2-) | ||
| 1438 3 | BC | (1/2-) | 1.4 ps +30-9 | 746 4 1279 5 1442 5 | 57 43 100 36 43 36 | [E2] | 693 155.4 0 | (3/2-) (3/2-) (5/2-) |
E(level): From a least-squares fit to γ-ray energies.
Jπ(level): Values in square brackets are from shell model predictions (2013StZY,2014St18)
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 155.4 | (3/2-) | 3.0 ns 7 | 156 3 | [M1] | 0.00127 | BM1=0.0034 +10-7 (<a href= "http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2014St18 ">2014St18</a>), B(M1)(W.u.)=0.0019 5, α=0.00127 7 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (5/2-) | 90 ms 60 % β- = 100 % β-2n = ? % β-n = 17 13 | σR=2.44 b 7 at 49.75 MeV/nucleon, 2.52 b 7 at 43.40 MeV/nucleon (2006Kh08). E(level): σR=2.44 b 7 at 49.75 MeV/nucleon, 2.52 b 7 at 43.40 MeV/nucleon (2006Kh08). |
| E(level) | E(gamma) | Comments |
| 717 | 562 | I(γ): From from 37Al decay. Corresponding values from 9Be(38Si,37Siγ) are nearly the same, but somewhat less precise | 717 | I(γ): From from 37Al decay. Corresponding values from 9Be(38Si,37Siγ) are nearly the same, but somewhat less precise |
| 1270.2 | 1115 | E(γ): From 37Al β- decay (2013StZY) I(γ): From 37Al β- decay (2013StZY) | 1202 | E(γ): From 37Al β- decay (2013StZY) I(γ): From 37Al β- decay (2013StZY) | 1270 | E(γ): From 37Al β- decay (2013StZY) I(γ): From 37Al β- decay (2013StZY) |
| 1438 | 1442 | E(γ): 1437 27 from Coulomb excitation (1999Ib01) |
First identification of 37Si nucleus by 1979Au03.
Particle stability established in 238U(40Ar,X) (1979Au03) and beryllium+48Ca reactions (1979We10).
1987Gi05: Ta(48Ar,X) E=60 MeV/nucleon. Measured fragment rigidity, tof. Deduced mass excess.
1991Zh24: Th(p,X) E=800 MeV. Measured fragment mass, charge state ratio, velocity histograms. Deduced mass excess.
1991Or01: Ta(48Ca,X) E=55 MeV/nucleon. Measured projectile-like spectra at GANIL facility. Measured mass excess=-6.18 MeV 28
1995ReZZ: Th(p,X) E=800 MeV. Measured neutron emission probabilities. Tof isochronous spectrometer.
2006Kh08: Si(37Si,X) E=49.75 and 43.40 MeV/nucleon. Measured cross sections and average radius at GANIL facility
2007No13: measured yield in 181Ta(40Ar,X) at 100 MeV/nucleon
Mass measurement: 2007Ju03
Structure calculations: 2004Kh16 (binding energies), 2008Wi11 (quadrupole deformation parameter, potential energy surfaces for hypernuclei)
Q-value: Q(β-n)=5590 80, S(2n)=8380 90, S(2p)=36810 200 (2012Wa38)