List of levels for 30AR

ADOPTED LEVELS for ³⁰Ar

Authors: M. S. Basunia, A. Chakraborty | Citation: Nucl. Data Sheets 197, 1 (2024) | Cutoff date: 31-May-2024

Full ENSDF file | Adopted Levels (PDF version)

S(n)= 23970 keV SY	S(p)= -760 keV SY	Q(α)= -8030 keV SY
Reference: 2021WA16

References:
A	³¹K p decay	B	⁹Be(³¹Ar,³⁰Ar)

³⁰Ar identified as an unbound nucleus by 2015Mu13 in one-neutron knockout reaction.

Theoretical nuclear structure calculations: 2014Le03, 2005Pa26, 2004Ge02

Theory about 2p decay mode: 2004Pf02, 2003Gr04, 2003Gr24

Q-value: ΔS(n)=470, ΔS(p)=130, ΔQ(α)=630 (syst,2021Wa16)

Q-value: S(2p)=-3420 80, Q(εp)=17880 180 (syst,2021Wa16)

XREFs

J^π

T_1/2/Decay

E(level) (keV)	XREF	J^π(level)	T_1/2(level)
0	A B	0+	< 10 ps % 2p = 100
0.53E3 22	B	(2+)	% p = 100
≈1.5E3	B	(0+)	% p = 100
1.78E3 17	B		% p = 100
3.13E3 12	B		% p = 100
5.3E3 1	B		% p = 100
6.8E3 19	B		% p = 100
10.1E3 11	B		% p = 100

E(level): From (³¹Ar,³⁰Ar)

E(level)	J^π(level)	T_1/2(level)	Comments
0	0+	< 10 ps % 2p = 100	From analysis of proton distribution spectrum following 2p decays of ³⁰Ar, 2015Mu13 conclude that the process is a combination of the two decay processes: "true " or simultaneous 2p emission, and sequential 1p emissions.
0.53E3	(2+)	% p = 100	This state decays by two branches of sequential 1p emissions via the lowest states in ²⁹Cl, finally to the ground state and first excited 2⁺ state in ²⁸S (2015Mu13, 2018Xu04).
1.5E3	(0+)	% p = 100	This state decays by two branches of sequential 1p emissions via the lowest states in ²⁹Cl, finally to the ground state and first excited 2⁺ state in ²⁸S, as shown in Fig. 10 of 2018Xu04.
1.78E3		% p = 100	This state decays by two branches of sequential 1p emissions via the lowest states in ²⁹Cl, finally to the ground state in ²⁸S, as shown in Fig. 10 of 2018Xu04.
3.13E3		% p = 100	This state decays by two branches of sequential 1p emissions via the lowest states in ²⁹Cl, finally to the ground state in ²⁸S, as shown in Fig. 10 of 2018Xu04.
5.3E3		% p = 100	This state decays by two branches of sequential 1p emissions via the lowest states in ²⁹Cl, finally to the ground state in ²⁸S, as shown in Fig. 10 of 2018Xu04.
6.8E3		% p = 100	This state decays by one branch of sequential 1p emission via the lowest states in ²⁹Cl, finally to the ground state in ²⁸S, as shown in Fig. 10 of 2018Xu04.
10.1E3		% p = 100	This state decays by two branches of sequential 1p emissions via the lowest states in ²⁹Cl, finally to the ground state in ²⁸S, as shown in Fig. 10 of 2018Xu04.