ADOPTED LEVELS:NOT OBSERVED for 33Ne

Authors: Jun Chen and Balraj Singh |  Citation: Nucl. Data Sheets 112, 1393 (2011) |  Cutoff date: 31-Mar-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=2.20×104 keV SYS(n)= -9.E2 keV SY
Reference: 2012WA38

General Comments:

33Ne is unbound i.e. particle unstable (2007Ba71,2002Lu09,2002No11)

2007Ba71: W(48Ca,Xγ) E=141 MeV/nucleon beam from the National Superconducting Cyclotron Laboratory (NSCL). The fragments were separated with the A1900 fragment separator. Isotopic identification by multiple ΔE signals, magnetic rigidity, total energy and time of flight analysis. Detectors: plastic scintillators, parallel-plate avalanche counters (PPACs) and silicon PIN diodes. No events could be assigned to 33Ne which confirmed this nucleus is unbound towards particle emission. The 34Ne nuclide is observed in this work as bound nucleus. The 33Ne nuclide should probably have been seen also if this were a bound nucleus.

2002Lu09, 2002Lu19: RIKEN-GANIL-Dubna collaboration. 33Ne not seen in reaction: Ta(48Ca,X) E=59.8 MeV/nucleon. Fragmentation of 48Ca primary beam. Reaction fragments analyzed by RIPS recoil fragment separator at RIKEN facility and LISE-2000 spectrometer at GANIL. Isotopic Identification by measurements of energy loss, total kinetic energy, time-of-flight and magnetic rigidity for each fragment. No events were observed for 33Ne.

2002No11, 1997Sa14: 33Ne not seen in reaction: Ta(48Ca,X) E=64 MeV/nucleon. Reaction fragments analyzed by RIPS recoil fragment separator at RIKEN facility. Identification by measurements of energy loss, total kinetic energy, time-of-flight and magnetic rigidity for each fragment. Expected cross section for 33Ne, based on measured cross sections for 31F and 35Na, is ≈10 pb. This cross section should result in the observation of some events for 33Ne but none were seen.

Q-value: Note: Current evaluation has used the following Q record

Q-value: Q(β-) and S(n) from 2009AuZZ, 2003Au03; S(p) and Q(α) from 1997Mo25

Q-value: Δ(Q(β-))=1190, Δ(S(n))=1130 (syst,2009AuZZ,2003Au03)

Q-value: Q(β-n)=18860 880 (syst,2009AuZZ,2003Au03)




E(level)
(keV)
T1/2(level)
  0? < 180 ns
% n = ?

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0 < 180 ns
% n = ?
Jπ(g.s.)=3/2- (syst,1997Mo25); 7/2- (syst,2003Au02).

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