ADOPTED LEVELS, GAMMAS for 27Ne

Author: M. Shamsuzzoha Basunia |  Citation: Nucl. Data Sheets 112, 1875 (2011) |  Cutoff date: 30-Nov-2010 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=1.255×104 keV 7S(n)= 1.51×103 keV 7S(p)= 1.892×104 keV 11Q(α)= -1.001×104 keV 12
Reference: 2012WA38

References:
  A  9Be(28Ne,27NeG),1H(28Ne,27NeG)  B  2H(26Ne,27NeG)

General Comments:

Some recent nuclear structure calculations: 2006Ko02, 2004Ge02, 2004La24.

Atomic mass excess measurement: 7020 keV 70 (2007Ju03)

2010Ro23: Measured one-neutron knock out cross section for 39 neutron rich isotopes, ranging from carbon to aluminium, and with neutron numbers from 8 to 22. For 27Ne the measured one-neutron knock out cross section is 102(12) mb on a beryllium target.

Production cross section |J0.1 μb, measured from 40Ar fragmentation reactions of both 9Be(40Ar,X), E=90A MeV, and 181Ta(40Ar,X), E=94A MeV - 2007No13.

48.01 MeV/u and 41.94 MeV/u beams of 27Ne on a Si target, measured σ=2346 (39) mb and σ=2356 (37) mb, respectively, for the Si(27Ne,x) reaction (2006Kh08). α squared reduced absorption radius of r02=1.250 (14) fm2 is deduced and used to study the isospin dependence.

2005Be60: 9Be(36S,Xγ): 27Ne obtained from fragmentation of a 36S beam at 77.5 MeV/nucleon on a Be target at GANIL selected through the α spectrometer; Detector: a 74 BaF2 detector array and 4 HPGe detectors; reports the 772 (7) keV γ-ray of 27Ne.

2005Iw02: Pb,C(28Ne,27Neγ): 27Ne was identified as contaminant from the 870 keV 16 γ-ray in the Pb,C(28Ne,28Neγ) reaction. 28Ne beam was produced by fragmentation of an 40Ar beam, E=95 MeV/u, on Be target, separated in the RIPS facility at RIKEN; reports the 870 (16) keV γ-ray of 27Ne.

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

Q-value: Q(β-)=12590 110, S(n)=1430 110, S(p)=18490 200 Q(α)=-9970 160 (2003Au03)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
    0.0AB (3/2+) 31.5 ms 13 
% β- = 100
% β-n = 2.0 5
     
  765 1 AB (3/2-)     765 1 
 

    0.0
(3/2+)
  885 2 AB (1/2+) < 10 ps   119
  885 2 
   24 3 
  100 3 
D
D+Q
  765
    0.0
(3/2-)
(3/2+)

E(level): From γ-ray energies

E(γ): From 2H(26Ne,27Neγ), except otherwise noted

I(γ): From 9Be(28Ne,27Neγ),1H(28Ne,27Neγ)

M(γ): Proposed in 2006Te04 ((28Ne,27Neγ),(28Ne,27Neγ)), on the basis of 119γ and 885γ branching ratio from the 885-keV level and the upper limit of the level half-life.

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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Additional Gamma Comments:

E(level)E(gamma)Comments
  885  119E(γ): From 9Be(28Ne,27Neγ) (2006Te04)

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