ADOPTED LEVELS for 39Ti

Author: Jun Chen |  Citation: Nucl. Data Sheets 149, 1 (2018) |  Cutoff date: 1-Jan-2018 

 Full ENSDF file | Adopted Levels (PDF version) 


S(n)= 16740 keV SYS(p)= 840 keV SYQ(α)= -5010 keV SY
Reference: 2017WA10

General Comments:

First identification of 39Ti nuclide by 1990De43

1990De43: 39Ti produced in 58Ni(58Ni,X) reaction at 65 MeV/nucleon; measured β-delayed protons, T1/2. No evidence found for delayed two-proton decay

1992Mo15: 39Ti produced in calc(3He,X) reaction at 110 MeV. Measured β-delayed two-proton sum spectra. Deduced IAS for 39Sc

1994Bl10: 39Ti produced in fragmentation of 58Ni beam at 650 MeV/nucleon with a 9Be target

2001Gi01 (also 2001Gi02,2002Ch28): 39Ti produced in fragmentation of 58Ni beam at 74.5 MeV/nucleon with natural Ni target; GANIL. Measured delayed protons, T1/2, yields

2007Do17: 39Ti was produced in Ni(58Ni,X) reaction at 74.5 MeV/nucleon at GANIL. Measured decay-time distribution, β-delayed proton and γ spectra. Deduced 39Ti half-life, decay branching ratios.

2016Bl05: 9Be(78Kr,X) E=345 MeV/nucleon. Measured σ.

Theoretical calculations: 2013Ti01 (atomic mass)

2001Gi01 report following delayed proton groups from 39Ti decay: 2440 25 (8% 5), 3575 30 (6.5% 45), 3990 30 (7.3% 45), 4880 40 (12.5% 65), with energy in lab system. The first three groups are interpreted by 2001Gi01 as εp decay to 38Ca, the fourth group as ε2p decay to 37K; corresponding proton (sum) line in 1992Mo15 is 4750 40

2007Do17 report two proton groups of 3270 20 (7% 2) and 5170 30 (10% 3) (energy in c.m. system) from 39Ti εp decay but do not place them in the decay scheme due to low statistics and lack of detailed analysis.

Q-value: Δ(S(n))=360, Δ(S(p))=280, Δ(Q(α))=280 (syst, 2017Wa10)

Q-value: Q(β+)=16370 210, Q(εp)=16970 210 (syst, 2017Wa10)





E(level)
(keV)
Jπ(level) T1/2(level)
  0 (3/2+) 28.5 ms 9 
% ε = 100

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0(3/2+) 28.5 ms 9 
% ε = 100
T=5/2
Delayed-2 proton decay observed by 1992Mo15; %εp=93.7 28 reported in 2007Do17. From systematics, %εp=85 15; %ε2p=15 (2017Au03).
E(level): Delayed-2 proton decay observed by 1992Mo15; %εp=93.7 28 reported in 2007Do17. From systematics, %εp=85 15; %ε2p=15 (2017Au03).

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