List of levels for 49CA

Author: T. W. Burrows | Citation: Nucl. Data Sheets 109, 1879 (2008) | Cutoff date: 14-Jul-2008

Levels: Analog states: see ⁴⁸Ca(p,X),(d,n),(³He,d),(α,t) in ⁴⁹Sc

Levels: Configuration: from analysis of ⁴⁸Ca(³He,dp) data by 1978He15. See ⁴⁸Ca(d,n),(³He,d),(α,t) in ⁴⁹Sc

Levels: %n: inferred by the evaluator from the lack of competing γ deexcitation in β^- decay or calculated from gΓ_nΓ_γ/Γ, Γ_n, Γ_γ, and adopted J

Levels: %γ: calculated from gΓ_nΓ_γ/Γ, Γ_n, Γ_γ, and adopted J

Levels: Γ_n,Γ_γ: from the R-matrix analysis of 1987Ca11 in (n,X),(n,γ)

Levels: gΓ_nΓ_γ/Γ from the R-matrix analysis of 1987Ca11 in (n,X),(n,γ)

Gammas: See (d,pγ) for questionably placed γ’s which have not been adopted.

Q-value: Note: Current evaluation has used the following Q record 5262.1 295146.45 1816454 24-13944 4 2003Au03

E(level): From (d,p),(pol d,p), except as noted. Note that the correspondence between unbound states observed in (d,p), β^- decay, and (n,X),(n,γ) should not Be considered as well established.

J^π(level): From comparison of σ(θ) and α(θ) to DWBA in (pol d,p), except as noted

T_1/2(level): T_1/2’s are from DSAM in (d,pγ), except as noted. Γ’s are from gΓ_nΓ_γ/Γ, Γ_n, Γ_γ, and adopted J, except as noted

E(γ): From (⁴⁸Ca,Xγ), except as noted

I(γ): Relative photon branching from each level. From β^- decay, except as noted

M(γ): d,E2 from comparison to RUL and Δπ from level scheme, except as noted

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
2023.2	1/2-	< 5.5 fs	2023.12 26	(M1,E2)	0.000314	α=0.000314 5, α(K)=1.82×10^-5 9, α(L)=1.56E-6 7, α(M)=1.85E-7 9, α(N)=1.05E-8 5, α(N+)=0.00029 4
3354.7	(9/2+)		3356.7 10	[E3]	6.83×10^-4	B(E3)(W.u.)>5.9, α=6.83E-4 10, α(K)=1.131E-5 16, α(L)=9.69E-7 14, α(M)=1.151E-7 17, α(N+)=0.000671 10
3585.0	5/2-	40 fs +23-16	3585.0	(M1,E2)	0.000977	α=0.000977 14, α(K)=7.25×10^-6 17, α(L)=6.20E-7 14, α(M)=7.36E-8 17, α(N)=4.20E-9 10, α(N+)=0.00096 7
3991	5/2-	9.7 fs +49-35	3991	(M1,E2)	0.001117	α=0.001117 14, α(K)=6.19×10^-6 13, α(L)=5.29E-7 12, α(M)=6.29E-8 14, α(N)=3.58E-9 8, α(N+)=0.00110 7
4072	3/2-	60 fs +21-19	4072.0	(M1,E2)	0.001137	α=0.001137 16, α(K)=6.02×10^-6 13, α(L)=5.14E-7 11, α(M)=6.11E-8 13, α(N)=3.48E-9 8, α(N+)=0.00113 7
4272	1/2-	25 fs +22-17	2249	(M1,E2)	0.000415	α=0.000415 6, α(K)=1.52×10^-5 6, α(L)=1.30E-6 5, α(M)=1.54E-7 6, α(N)=8.8E-9 4, α(N+)=0.00039 5
4272	1/2-	25 fs +22-17	4272	(M1,E2)	0.001208	α=0.001208 17, α(K)=5.62×10^-6 12, α(L)=4.80E-7 10, α(M)=5.70E-8 12, α(N)=3.25E-9 7, α(N+)=0.00120 8
4416	5/2+	< 32 fs	4416	(E1)	0.00184	B(E1)(W.u.)>0.00018, α=0.00184 3, α(K)=4.07E-6 6, α(L)=3.48E-7 5, α(M)=4.13E-8 6, α(N)=2.35E-9 4, α(N+)=0.00184 3

Q(β-)=5261 keV 3	S(n)= 5146.45 keV 18	S(p)= 16304.4 keV 8	Q(α)= -13954.0 keV 6
Reference: 2012WA38

References:
A	⁴⁹K β^- decay	B	⁵⁰K β^-n decay
C	²H(⁴⁸Ca,⁴⁹CaG) E=105 MeV	D	⁴⁸Ca(n,γ) E=THERMAL
E	⁴⁸Ca(n,X),(n,γ) E=0.01-2 MeV	F	⁴⁸Ca(d,p),(pol d,p)
G	⁴⁸Ca(d,pγ) E=6 MeV	H	⁴⁸Ca(t,d) E=37.3 MeV
I	⁴⁸Ca(⁴⁸Ca,xγ) E=210 MeV

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
0.0	A B C D F G H I	3/2-	8.718 m 6 % β^- = 100
2023.2 3	A B C D F G H I	1/2-	< 5.5 fs	2023.12 26	100	(M1,E2)	0.0	3/2-
3354.7 6	B C F G H I	(9/2+)		3356.7 10	100	[E3]	0.0	3/2-
3585.0 8	A B C F G H	5/2-	40 fs +23-16	3585.0	100	(M1,E2)	0.0	3/2-
3861 2	B C F G I	(1/2-,3/2-)		3859.7 9	100		0.0	3/2-
3991 2	C F G	5/2-	9.7 fs +49-35	3991	100	(M1,E2)	0.0	3/2-
4013.6 6	C F G I	7/2+,9/2+	0.60 ps +35-18	150.9? 660.3 4017.5?			3861 3354.7 0.0	(1/2-,3/2-) (9/2+) 3/2-
4072 1	A B C F G	3/2-	60 fs +21-19	4072.0	100	(M1,E2)	0.0	3/2-
4261	F	1/2-
4272 1	A C F G	1/2-	25 fs +22-17	2249 4272	87 16 100 16	(M1,E2) (M1,E2)	2023.2 0.0	1/2- 3/2-
4416 2	C F G	5/2+	< 32 fs	4416	100	(E1)	0.0	3/2-
4617 6 ?	F
4757.0 10	F I	(5/2+)		743.3			4013.6	7/2+,9/2+
4788 6 ?	F
4885 3	F G	9/2+		875 1531	100 20 25 5		4013.6 3354.7	7/2+,9/2+ (9/2+)
5132.8 10	I			1119.1			4013.6	7/2+,9/2+
5165.5	E
5251.3	E
5309	A E F	1/2	59 eV 34 % IT = 0.25 10 % n = 99.75 10
5378	F	9/2+
5443.9	E	1/2-	2.5 keV +36-25 % IT = 0.012 % n = 99.988 12
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
5539.5	E	3/2-	3.3 keV 18 % IT = 0.024 8 % n = 99.976 8
5553	E F	GE 5/2	≥ 0.38 keV % n ≥ 99.87 5 % IT ≤ 0.13 5
5568	A F	1/2-
5587.7	A E	1/2-	4.3 keV 27 % IT = 0.058 % n = 99.942 24
5612	A F
5680.2 9	I			547.4 923.2 1666.5			5132.8 4757.0 4013.6	(5/2+) 7/2+,9/2+
5693	A F
5722	A F
6076	E F	5/2+
6257	E	1/2
6262	F
6.33E+3 2	A	(1/2+,3/2+,5/2+)	% n ≈ 100
6376	A E F	(5/2+)	% n ≈ 100
6425	F	3/2	10 keV
6443	F	3/2	3 keV
6492	E	3/2-	8 keV
6513	A E	5/2+	% n ≈ 100
6529	F	9/2+
6595	F
6707	A E	5/2+	% n ≈ 100
6753	F	9/2+
6882	F
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
6924	A E	5/2+	% n ≈ 100
6971	F
7070	A E	5/2+	% n ≈ 100
7070	E	GE 7/2
7335	A F	(1/2+,3/2+,5/2+)	% n ≈ 100
7428	A F	(1/2+,3/2+,5/2+)	% n ≈ 100
7529	F	(9/2+)
7612	A F		% n ≈ 100
7705	F	(9/2+)
7872	A F		% n ≈ 100
8.14E+3 7 ?	A		% n ≈ 100
8.39E+3 8 ?	A	(1/2+,3/2+,5/2+)	% n ≈ 100
8.67E+3 9 ?	A		% n ≈ 100
9.10E+3	A		% n ≈ 100
9.28E+3 10	A		% n ≈ 100
9.58E+3 11	A		% n ≈ 100
10.10E+3 13 ?	A		% n ≈ 100

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	3/2-	8.718 m 6 % β^- = 100	μ=-1.38 6 (1993VeZY) T_1/2(level): Weighted av (internal) of 8.718 min 7 (1989Ab05; NaI), 8.715 min 23 (1970Ha22; NaI,chem,>20 T_1/2’s), and 8.719 min 13 (1970Re13; 7 T_1/2’s); all groups used (n,γ) to produce ⁴⁹Ca. Others: see 1995Bu23.
3354.7	(9/2+)		T_1/2 \|> 17.9 ps, T_1/2 \|< 0.3 ns. E(level): From least-squares fit to Eγ’s assuming ΔEγ=1 keV when not given and holding the 3585 and 3861 states fixed. Weighted average (internal) of 2023.5 5 from β^-n decay and 2023.16 30 from (n,γ) E=thermal.
3585.0	5/2-	40 fs +23-16	CONF=((48CA 2+) (1978He15) E(level): From β^- decay.
3861	(1/2-,3/2-)		E(level): From (d,pγ). From β^-n decay.
3991	5/2-	9.7 fs +49-35	CONF=((48CA 2+) (1978He15) E(level): From (d,pγ). From β^-n decay.
4013.6	7/2+,9/2+	0.60 ps +35-18	CONF=((48CA 3-)(N (1978He15) E(level): From least-squares fit to Eγ’s assuming ΔEγ=1 keV when not given and holding the 3585 and 3861 states fixed. Weighted average (internal) of 2023.5 5 from β^-n decay and 2023.16 30 from (n,γ) E=thermal.
4072	3/2-	60 fs +21-19	E(level): Unweighted average of 4065 2 from (d,pγ) and 4072 1 from β^- decay.
4272	1/2-	25 fs +22-17	E(level): From (d,pγ). From β^-n decay.
4416	5/2+	< 32 fs	E(level): From (d,pγ). From β^-n decay.
4757.0	(5/2+)		E(level): From least-squares fit to Eγ’s assuming ΔEγ=1 keV when not given and holding the 3585 and 3861 states fixed. Weighted average (internal) of 2023.5 5 from β^-n decay and 2023.16 30 from (n,γ) E=thermal.
4885	9/2+		E(level): From (d,pγ). From β^-n decay.
5132.8			E(level): From least-squares fit to Eγ’s assuming ΔEγ=1 keV when not given and holding the 3585 and 3861 states fixed. Weighted average (internal) of 2023.5 5 from β^-n decay and 2023.16 30 from (n,γ) E=thermal.
5165.5			gΓ_nΓ_γ/Γ (eV)=9.5×10^-3 14. E(level): From E(n)(lab) in (n,X),(n,γ).
5251.3			gΓ_nΓ_γ/Γ (eV)=0.124 24. E(level): From E(n)(lab) in (n,X),(n,γ).
5309	1/2	59 eV 34 % IT = 0.25 10 % n = 99.75 10	Γ_γ=0.15 6, Γ_n=59 5 gΓ_nΓ_γ/Γ (eV)=0.15 6. E(level): From β^- decay. Eγ discrepant with energy level difference by more than three σ. J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
5443.9	1/2-	2.5 keV +36-25 % IT = 0.012 % n = 99.988 12	Γ_γ=0.3 3, Γ_n=2.5 3 gΓ_nΓ_γ/Γ (eV)=12 . E(level): From E(n)(lab) in (n,X),(n,γ). J^π(level): From the evaluation of 2006MuZX.
5539.5	3/2-	3.3 keV 18 % IT = 0.024 8 % n = 99.976 8	Γ_γ=0.8 3, Γ_n=3.3 2 gΓ_nΓ_γ/Γ (eV)=1.6 6. E(level): From E(n)(lab) in (n,X),(n,γ). J^π(level): From the evaluation of 2006MuZX.
5553	GE 5/2	≥ 0.38 keV % n ≥ 99.87 5 % IT ≤ 0.13 5	Γ_γ=0.5 1, Γ_n=0.38 8 gΓ_nΓ_γ/Γ (eV)=1.5 4. E(level): From β^- decay. Eγ discrepant with energy level difference by more than three σ. J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
5568	1/2-		J^π(level): From the evaluation of 2006MuZX. (1/2⁺,3/2⁺,5/2⁺) for the multiplet from log ft<5.9 from (3/2⁺).
5587.7	1/2-	4.3 keV 27 % IT = 0.058 % n = 99.942 24	Γ_γ=2.5 10, Γ_n=4.3 4 gΓ_nΓ_γ/Γ (eV)=24 . E(level): From E(n)(lab) in (n,X),(n,γ). J^π(level): From the evaluation of 2006MuZX. (1/2⁺,3/2⁺,5/2⁺) for the multiplet from log ft<5.9 from (3/2⁺).
5693			J^π(level): (1/2⁺,3/2⁺,5/2⁺) for the multiplet from log ft<5.9 from (3/2⁺).
5722			J^π(level): (1/2⁺,3/2⁺,5/2⁺) for the multiplet from log ft<5.9 from (3/2⁺).
6076	5/2+		E(level): Eγ discrepant with energy level difference by more than three σ. J^π(level): From the evaluation of 2006MuZX.
6257	1/2		Γ_n=6 3 E(level): From β^- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ). J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
6.33E+3	(1/2+,3/2+,5/2+)	% n ≈ 100	E(level): From β^- decay. J^π(level): log ft<5.9 from (3/2⁺) in β^- decay.
E(level)	J^π(level)	T_1/2(level)	Comments
6376	(5/2+)	% n ≈ 100	Γ_n=1.2 4 E(level): Eγ discrepant with energy level difference by more than three σ.
6425	3/2	10 keV	E(level): From the evaluation of 2006MuZX. J^π(level): From the evaluation of 2006MuZX. T_1/2(level): From the evaluation of 2006MuZX.
6443	3/2	3 keV	J^π(level): From the evaluation of 2006MuZX. T_1/2(level): From the evaluation of 2006MuZX.
6492	3/2-	8 keV	Γ_n=5 1 E(level): From β^- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ). J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). T_1/2(level): From the evaluation of 2006MuZX.
6513	5/2+	% n ≈ 100	Γ_n=4 2 E(level): From β^- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ). J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
6707	5/2+	% n ≈ 100	Γ_n=160 20 E(level): From β^- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ). J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
6924	5/2+	% n ≈ 100	Γ_n=240 20 E(level): From β^- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ). J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
7070	5/2+	% n ≈ 100	Γ_n=18 2 E(level): From β^- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ). J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
7070	GE 7/2		Γ_n=2.9 6 E(level): From β^- decay. From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ). From (d,pγ). J^π(level): From the R-matrix analysis of 1987Ca11 in (n,X),(n,γ).
7335	(1/2+,3/2+,5/2+)	% n ≈ 100	J^π(level): log ft<5.9 from (3/2⁺) in β^- decay.
7428	(1/2+,3/2+,5/2+)	% n ≈ 100	J^π(level): log ft<5.9 from (3/2⁺) in β^- decay.
8.14E+3		% n ≈ 100	E(level): From β^- decay.
8.39E+3	(1/2+,3/2+,5/2+)	% n ≈ 100	E(level): From β^- decay. J^π(level): log ft<5.9 from (3/2⁺) in β^- decay.
8.67E+3		% n ≈ 100	E(level): From β^- decay.
9.10E+3		% n ≈ 100	E(level): From β^- decay.
9.28E+3		% n ≈ 100	E(level): From β^- decay.
9.58E+3		% n ≈ 100	E(level): From β^- decay.
10.10E+3		% n ≈ 100	E(level): From β^- decay.