List of levels for 24AL

ADOPTED LEVELS, GAMMAS for ²⁴Al

Authors: M. Shamsuzzoha Basunia, Anagha Chakraborty | Citation: Nucl. Data Sheets 186, 2 (2022) | Cutoff date: 31-Mar-2022

Full ENSDF file | Adopted Levels (PDF version)

Q(β-)=-10794 keV 19	S(n)= 14868.2 keV 4	S(p)= 1864.11 keV 23	Q(α)= -9324.2 keV 11
Reference: 2021WA16

References:
A	²⁴Al IT decay (130.7 MS)	B	²⁴Si ε decay (141.3 MS)
C	¹H(²³Mg,γ)	D	¹H(²³Mg,p)
E	¹⁰B(¹⁶O,2nγ)	F	²³Na(pol p,π^-)
G	²⁴Mg(p,n)	H	²⁴Mg(³He,t)
I	²⁷Al(³He,⁶He)

Mass measurement: 2015Ch58

DICT$ ¹H(²³Mg,p)=¹H(²³Mg,p)

Q-value: S(2n)=34390 400 (syst), S(2p)=9445.36 26, Q(εp)=2192.07 23 (2021Wa16)

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
0	A B E F G H	4+	2.053 s 4 % ε = 100 % εα = 0.035 6 % εp = 0.0016 3
425.81 10	A B E G H	1+	130.7 ms 13 % IT = 69.6 7 % ε = 30.4 7 % εα = 0.028 6	425.81 10	100	[M3]	0	4+
500.12 13	E G H	2+		74.3 1 500.0 5	100 2 4.4 9		425.81 0	1+ 4+
1088.35 22	B E H	1+		662.5 2	100		425.81	1+
1107.92 23	E G H	(2)+		682.1 2	100		425.81	1+
1261.09 22	E F G H	(3,4)+		760.9 2 1261.4 5	83 9 100 13		500.12 0	2+ 4+
1538.55 20	E	(5+)		1538.5 2	100		0	4+
1548.2 4	E			459.8 3 1048.5 9	100 17 64 13		1088.35 500.12	1+ 2+
1553 6	G H	(5)+
1617.0 5	E H	(3)+		1116.9 5 1617.0 12	100 8 34 11		500.12 0	2+ 4+
1645 13	G	(3)+
2345.1 14	C E G H	(3)+		1844.9 14	100		500.12	2+
2523 6	G H	(3,4,5)+
2605 10	H	1+
2805 10	G H	(1,2,3)+
2878 6	G H	(1,2,3)+
2978 6	B H	1+
3019 6	G H	1+
3236 6	H	(1,2,3)+
3269 6	H	(1,2,3)+
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
3328 6	G H
3371 10	B H	1+
3442 7	H	(1+)
3490 10	G	(1,2,3)+
3583 7	H
3667 7	G H
3818 7	H
3875.4 11	E H	(6+)		2336.7 10	100		1538.55	(5+)
3905 10	D G
4061 10	D H
4129 24	H
4254 8	H	(4,5,6)-
4316 10	G
4388 10	B D H	1+
4448 9	H
4491 10	G
4704 8	B D H	1+
4760 8	G H
4848 10	H
4976 9	B D H	1+
5.19E+3 10	F
5313 14	H
5382 11	B	(1+)
5461 16	G H	(4,5,6)-
5531 19	H
5614 22	H
5714 10	H
5839 16	B H	1+
5899 16	H
5960 9	B I	0+
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
5996 20	H
6164 16	H
6239 12	B H	1+
6324 48	H
6481 12	B H	1+
6554 15	H
6697 19	H
6735 12	B	1+
6797 23	H
6878 30	H	1+
6910 30	H
7086 8	H
7360 3	H
7441 18	H
7679 20	H

E(level): From a least squares fit of the Eγ for levels with depopulating γ. Source of other E(level) listed in comments. In a few cases level energies reported by (³He,t) studies vary significantly and there is no clue to judge if those are same or different levels. Please see the dataset for details.

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
425.81	1+	130.7 ms 13 % IT = 69.6 7 % ε = 30.4 7 % εα = 0.028 6	425.81 10	[M3]	1.14×10^-3	B(M3)(W.u.)=2.016 +27-29, α=1.14×10^-3, α(K)=0.001067 15, α(L)=7.36E-5 11, α(M)=3.90E-6 6

E(level)	J^π(level)	T_1/2(level)	Comments
425.81	1+	130.7 ms 13 % IT = 69.6 7 % ε = 30.4 7 % εα = 0.028 6	T=1, μ=2.99 9 %IT, %ε+%β⁺ from 2011Ni18, 2011Ma88, and %εα from 1979Ho08. Other %IT, %ε+%β⁺: 82.5 30, 17.5 30 (1979Ho08), and 78 3, 22 3 (1979Sh11), respectively. E(level): %IT, %ε+%β⁺ from 2011Ni18, 2011Ma88, and %εα from 1979Ho08. Other %IT, %ε+%β⁺: 82.5 30, 17.5 30 (1979Ho08), and 78 3, 22 3 (1979Sh11), respectively.
500.12	2+		XREF: γ(514).
1088.35	1+		XREF: H(1109). E(level): From (³He,t) studies, 1977Tr04 report a doublet at 1120 keV separated by about 20 keV, confirmed by 1977Pe21. Evaluators assume these are corresponding levels of 1109 and 1130 in (³He,t).
1107.92	(2)+		T=1 XREF: γ(1116)H(1130). E(level): From (³He,t) studies, 1977Tr04 report a doublet at 1120 keV separated by about 20 keV, confirmed by 1977Pe21. Evaluators assume these are corresponding levels of 1109 and 1130 in (³He,t).
1261.09	(3,4)+		XREF: γ(1292).
1538.55	(5+)		J^π(level): From (¹⁶O,2nγ) - 2008Lo04, based on γ decay, comparison with analogue states of ²⁴Na. More arguments listed in comments, if available.
2345.1	(3)+		XREF: γ(2380).
2605	1+		J^π(level): No excitation of the isobaric analog state (ΔL=0, ΔS=0) is expected for a ²⁴Mg target (n=Z) in (³He,t).
2978	1+		J^π(level): No excitation of the isobaric analog state (ΔL=0, ΔS=0) is expected for a ²⁴Mg target (n=Z) in (³He,t).
3328			L=2(+0) in (p,n) and L=3,4 in (³He,t).
3371	1+		J^π(level): No excitation of the isobaric analog state (ΔL=0, ΔS=0) is expected for a ²⁴Mg target (n=Z) in (³He,t).
3442	(1+)		J^π(level): No excitation of the isobaric analog state (ΔL=0, ΔS=0) is expected for a ²⁴Mg target (n=Z) in (³He,t).
3875.4	(6+)		XREF: H(3858).
3905			XREF: d(3880).
4388	1+		J^π(level): No excitation of the isobaric analog state (ΔL=0, ΔS=0) is expected for a ²⁴Mg target (n=Z) in (³He,t).
4704	1+		XREF: d(4670). J^π(level): No excitation of the isobaric analog state (ΔL=0, ΔS=0) is expected for a ²⁴Mg target (n=Z) in (³He,t).
5461	(4,5,6)-		T=1 XREF: γ(5545).
5960	0+		T=2 XREF: I(5971).
6878	1+		J^π(level): No excitation of the isobaric analog state (ΔL=0, ΔS=0) is expected for a ²⁴Mg target (n=Z) in (³He,t).

E(level)	E(gamma)	Comments
425.81	425.81	E(γ): From ²⁴Al IT decay (130.7 ms)