ADOPTED LEVELS, GAMMAS for 34Al

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-)=1.689×104 keV 7S(n)= 2.67×103 keV 11S(p)= 1.532×104 keV 7Q(α)= -1.397×104 keV 7
Reference: 2012WA38

References:
  A  34Mg β- decay (20 MS)  B  35Mg β-n decay (70 MS)
  C  Coulomb Excitation 

General Comments:

1977Bu11: identification and production of 34Al isotope in U(p,X) at 800 MeV, spallation reaction, time-of-flight and energy loss measurements, LAMPF facility

1979We10: production of 34Al in fragmentation of 48Ca beam with Be target at 212 MeV/nucleon at Berkeley Bevalac facility.

Later productions and half-life measurements: 1986Vi09, 1986Du07, 1987Gi05, 1988Mu08, 1989Ba50, 1991Zh24, 1991Or01, 1997Fo01, 2005Ob04, 2007No13

2001Nu01 (also 2002Nu02): mass-separated 34Al produced in U(p,X) E=1 GeV reaction using uranium carbide target, CERN-ISOLDE facility. Measured Eγ, Iγ, β, βγ, βγγ, βnγ coin, βγ(t), T1/2 and delayed neutron-emission probability using Ge and BaF2 detectors for γ rays, plastic scintillation detectors for β rays and neutrons.

2006Kh08: Cross section and strong absorption radius measurement in Si(34Al,X) reaction at 44.4 MeV/nucleon and 50.9 MeV/nucleon.

2008Hi01: 9Be(36S,xγ) E=77.5 MeV/nucleon. Extracted 34Al beam using LISE fragment separator at GANIL facility. Beam implanted in Si crystal. Measured magnetic moment using nuclear magnetic resonance (NMR) method following β decay.

2006FuZX: In He(34Al,x) E=40 MeV/nucleon reaction, possible prompt γ rays of 383.7 keV 12 and 425.3 keV 11 are identified, but no level scheme is proposed. The 34Al beam was produced by fragmentation of 63 MeV/nucleon 40Ar beam with carbon+Be target at riken facility using rips separator and grape γ detector array.

2012No05: 9Be(34Al,33Al) at ≈900 MeV/nucleon, GSI facility, one-neutron removal reaction. Measured momentum distribution. Deduced single-particle occupancies in g.s. of 34Al. Eikonal analysis

Mass measurements: 2007Ju03 (cyclotron based mass spectrometry), 1987VaZS

This isotope is interpreted to lie in the "island of inversion " (2008Hi01)

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

Q-value: S(2n)=8128 105, S(2p)=36435 134, Q(β-n)=9396 60 (2011AuZZ)

Q-value: Values in 2003Au03: Q(β-)=17020 110, S(n)=2470 130, S(p)=15120 110, Q(α)=-13720 120, Q(β-n)=9490 110, S(2n)=8010 140, S(2p)=36570 370







E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
    0A C (4-) 56.3 ms 5 
% β- = 100
% β-n = 26 4
 
  657 9   C (4-)     657 9 

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    0(4-) 56.3 ms 5 
% β- = 100
% β-n = 26 4
μ=(+)2.156 (2008Hi01,2011StZZ)
Measured r20=1.187 fm2 18 (2006Kh08) in Si(34Al,X) reaction at 44.4 MeV/nucleon and 50.9 MeV/nucleon. Integral cross sections were also measured.
E(level): Measured r20=1.187 fm2 18 (2006Kh08) in Si(34Al,X) reaction at 44.4 MeV/nucleon and 50.9 MeV/nucleon. Integral cross sections were also measured.

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Additional Gamma Comments:

E(level)E(gamma)Comments
  657  657E(γ): from Coulomb excitation

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