ADOPTED LEVELS, GAMMAS for 17C

Authors: J.H. Kelley, G.C. Sheu |  Citation: ENSDF |  Cutoff date: 01-May-2017 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=13162 keV 23S(n)= 734 keV 18S(p)= 2.337×104 keV 3Q(α)= -15052 keV 20
Reference: 2017WA10

References:
  A  1H(17C,p’γ)  B  1H(17C,16CN),1H(19C,16CN)
  C  1H(18C,17CG)  D  1H(19C,2N17CG)
  E  9Be(17C,X)  F  9Be(18C,17CG):RIKEN
  G  9Be(18C,17CG):NSCL  H  9Be(40Ar,17C)
  I  C(36S,xγ)  J  14C(12C,9C)
  K  17B β- decay:5.08 MS  L  48Ca(18O,17C)
  M  93Nb(22Ne,17C)  N  208Pb(17C,17C)
  O  208Pb(18C,17C)  P  208Pb(18O,17C),207Pb(18O,17C)
  Q  U(p,17C)  R  232Th(18O,17C)
  S  232Th(22Ne,17C) 

General Comments:

Previous Level Evaluations: 1971Aj02, 1977Aj04, 1982Aj01, 1986Aj04, 1993Ti07

Enhancement of neutron density profile:

Analyses of the 17C density profile have been carried out based on measurements of various reaction cross sections and momentum distributions of breakup products. The excess of neutrons in 17C do not appear to form a halo. See discussions in references listed below.

2004Sa14: E(17C)=49 MeV/nucleon, carbon target, σ1n=84 mb 9, FWHM of Pparallelc.m.=111 MeV/c 3 and of Ppxc.m.=140 MeV/c 3. Also measured FWHM of Pparallelc.m.=121 MeV/c 7 on a Ta target. Deduce Jπ=3/2+.

2001Ma08,2001Ma21: E(17C)≈62 MeV/nucleon, 9Be target surrounded by 11 NaI detectors; σ1n=115 mb 14.

2004Wu03: E(17C)≈79 MeV/nucleon, carbon target, σreaction=1350 mb. See also comments on deformation in (2014Fa02).

2005Wu01: E(17C)≈79 MeV/nucleon, carbon target, σ1n=116 mb 18, σ2n=70 mb +33-18, σ3n=40 mb +30-13.

1998Ba28: E(17C)≈84 MeV/nucleon, Be target, σ(Be)1n=26 mb and FWHM(16C Pparallel)=145 MeV/c 5.

1995Ba28: E(17C)≈96.8 MeV/nucleon, Be target, σ(Be)1n=40.9 mb 43 and Γ(16C Pparallel)=94 MeV/c 19.

1998Ba87,2001Co06: E(17C)≈910 MeV/nucleon, carbon target, FWHM(16C Pparallel)=141 MeV/c 6 and σ1n=129 mb 22.

2001Oz03: E(17C)=965 MeV/nucleon, carbon target, σinteraction=1056 mb 10, analyzed relation of σi to effective matter radius: Rrms≈2.72 fm 3. See also (2004Oz02).

2000Sa47: E(17C)=49 MeV/nucleon, carbon target,FWHM(16C Pparallel)lab=111 MeV/c 3, σ1n=84 mb 9. The authors suggest Jπ=3/2+ from a 1d5/2 neutron coupled to the 16C Jπ=2+1 state.

For experimental reviews mainly on the nuclear radius see: 1997Or03, 2000Co31, 2000Oz03, 2001Lo20, 2009Ch45, 2011Al11

For theoretical reviews mainly on the nuclear radius see: 1992La13, 1996Sh13, 1997Ki22, 1999La04, 1998Ri02, 1999Kn04, 2000Be58, 2000Gu04, 2001Le21, 2002Gu10, 2011Fo18, 2013Lu02, 2015Ha20, 2016Fo24, 2016Ya05

Theoretical reviews mainly of 17C: 1989Wa06, 1996Re19, 2008Ka39, 2008Sa39, 2008Su22, 2009Su17, 2010Ti02, 2012Am01, 2013Am01, 2014Fo02

General theoretical reviews of carbon isotopes: 1996Re19, 1996Ka14, 1998Sh16, 2000De35, 2003Sa50, 2003Su09, 2003Th06, 2004Th11, 2004Sa58, 2005Sa63, 2006Le33, 2006Ta28, 2007Sa50, 2009Um05, 2010Co05, 2014Ja14

General theoretical reviews including many nuclides: 1987Sa15, 1993Po11, 1996Su24, 1997Ho04, 1997Ba54, 2001Ka66, 2002Ka73, 2002Me12, 2003Le34, 2004La24, 2004Ne16, 2004Su23, 2006Ko02, 2007Ha53, 2007Do20, 2010Ha07, 2012Am06, 2012Yu07, 2015Sh21








E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)
      0ABCDEFGHI KLMNOPQRS 3/2+ 193 ms 6 
% β- = 100
% β-n = 26.0 18
  
    217 1   CD FG I K   O     1/2+ 366 ps +15-10    217 2 
  100
    332 2 A CD FG IJKL  O     5/2+ 15.1 ps +24-23    331 2 
  100
   2150 70  B       J          7/2+ 0.53 MeV 4    
   2710 20           K         1/2- 0.04 MeV 1    
   3085 25  B       J          9/2+ 0.10 MeV 5    
   3930 20           K         3/2- 0.16 MeV 4    
   4050 20           K         (5/2-) 0.06 MeV 6    
   4250 20          J          (5/2+,7/2+,9/2+) 0.14 MeV 8    
   4780 20           K         0.3 MeV 3    
   6080 30           K         2.5 MeV 7    
   6200 30  B       J          (5/2+) 0.35 MeV 15    
   7470 30          J          (11/2+) 0.58 MeV 10    
   8850 50          J          (9/2+) 0.66 MeV 20    
  10560 30          J          (13/2+) 0.30 MeV 10    
  11710 50          J          0.30 MeV 15    
  12610 30          J          0.45 MeV 20    
  13700 50          J          0.6 MeV 2    
     16.3E3 1 ?         J          0.5 MeV 2    

T1/2(level): LABEL=t or Γ

Back to top

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      03/2+ 193 ms 6 
% β- = 100
% β-n = 26.0 18
-n from 1994 Reeder.

Back to top