List of levels for 47CR

Author: T. W. Burrows | Citation: Nucl. Data Sheets 108, 923 (2007) | Cutoff date: 20-Feb-2007

The level scheme of 1998Be69 in ¹⁰B(⁴⁰Ca,p2nγ) and that of 1994Ca04 in ¹⁰B(⁴⁰Ca,p2nγ) are consistent through the 5903, 23/2- state. 1998Be69 did not observe the 1823γ assigned as 27/2-|)23/2- by 1994Ca04 and assigned the 2112γ to the 10019, 31/2-, level instead of the 9841.

The work of 1998Be69 in ²⁴Mg(²⁸Si,αnγ) showed no evidence for the 1823γ assigned as 27/2-|)23/2- by 1994Ca04 in ⁴⁰Ca(¹²C,nαγ) and, therefore, this has not been adopted by the evaluator

Q-value: Note: Current evaluation has used the following Q record -12300 syst 13156 24 4774 14 -7662 16 2003Au03

Q-value: Other: 2000HaZY

E(level): From least-squares fit to Eγ, assuming ΔE_γ=1 keV, except for states observed only in ⁵⁰Cr(³He,⁶He)

T_1/2(level): From γγ(t) in ¹⁰B(⁴⁰Ca,p2nγ), ⁴⁰Ca(¹²C,nαγ),..., except as noted to possible contamination from ⁴⁶V (see discussion in 1985Bu07)

E(γ): Mean of Eγ’s from ¹⁰B(⁴⁰Ca,p2nγ) and ²⁴Mg(²⁸Si,αnγ),²⁸Si(²⁸Si,2αnγ), except as noted

M(γ): From angular anisotropy in ¹⁰B(⁴⁰Ca,p2nγ), except as noted

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
99.1	(5/2-)	≤ 2.1 ns	98.7	(M1)	0.0269	B(M1)(W.u.)>0.010, α=0.0269, α(K)=0.0242 4, α(L)=0.00232 4, α(M)=0.000306 5, α(N)=1.120×10^-5 16, α(N+)=1.120E-5 16
174.2	(7/2-)	≤ 2.1 ns	74.7	(M1)	0.0566	B(M1)(W.u.)>0.023, α=0.0566, α(K)=0.0510 8, α(L)=0.00492 7, α(M)=0.000647 9, α(N)=2.36×10^-5 4, α(N+)=2.36E-5 4
174.2	(7/2-)	≤ 2.1 ns	173.4	(E2)	0.0494	B(E2)(W.u.)>2.2, α=0.0494, α(K)=0.0445 7, α(L)=0.00430 6, α(M)=0.000561 8, α(N)=1.96E-5 3, α(N+)=1.96E-5 3
2653.8	(15/2-)	0.583 ps 83	1321.7	(E2)	0.0001160	B(E2)(W.u.)=24 4, α=0.0001160 17, α(K)=7.44E-5 11, α(L)=6.87E-6 10, α(M)=9.04E-7 13, α(N)=3.40E-8 5, α(N+)=3.39E-5 5
4139.0	(19/2-)	0.305 ps 42	372	(M1)	0.001000	B(M1)(W.u.)=0.067 10, α=0.001000 14, α(K)=0.000907 13, α(L)=8.47×10^-5 12, α(M)=1.114E-5 16, α(N)=4.17E-7 6, α(N+)=4.17E-7 6
4139.0	(19/2-)	0.305 ps 42	1485.7	(E2)	0.0001470	B(E2)=24 4, α=0.0001470 21, α(K)=5.82E-5 9, α(L)=5.37E-6 8, α(M)=7.07E-7 10, α(N)=2.66E-8 4, α(N+)=8.24E-5 12
5905.0	(23/2-)	< 0.444 ps	530	(M1)	0.000453	B(M1)(W.u.)>0.038, α=0.000453 7, α(K)=0.000410 6, α(L)=3.81×10^-5 6, α(M)=5.01E-6 7, α(N)=1.88E-7 3, α(N+)=1.88E-7 3
5905.0	(23/2-)	< 0.444 ps	1766.0	(E2)	0.000248	B(E2)(W.u.)>6.5, α=0.000248 4, α(K)=4.14E-5 6, α(L)=3.81E-6 6, α(M)=5.01E-7 7, α(N)=1.89E-8 3, α(N+)=0.000202 3

Q(β-)=-1.200×10⁴ keV 4	S(n)= 13159 keV 22	S(p)= 4775 keV 7	Q(α)= -7665 keV 10
Reference: 2012WA38

References:
A	⁴⁷Mn β⁺ decay	B	⁴⁸Fe β⁺p decay
C	¹⁰B(⁴⁰Ca,p2nγ), ⁴⁰Ca(¹²C,NAG),	D	²⁴Mg(²⁸Si,αnγ),²⁸Si(²⁸Si,2αnγ)
E	⁵⁰Cr(³He,⁶He)

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 E	3/2-	500 ms 15 % ε = 100
99.1	C D E	(5/2-)	≤ 2.1 ns	98.7	100	(M1)	0.0	3/2-
174.2	C D E	(7/2-)	≤ 2.1 ns	74.7 173.4	≈100 1.4	(M1) (E2)	99.1 0.0	(5/2-) 3/2-
471.7	C E	(3/2+)		372.2 472	17 100		99.1 0.0	(5/2-) 3/2-
870.1	C E	(5/2+)		399 770 871	30 10 100	D D	471.7 99.1 0.0	(3/2+) (5/2-) 3/2-
1332.1	C D E	(11/2-)		1157.7	100	D,Q	174.2	(7/2-)
1345.5	C E	(7/2+)		474 873 1248	100 75 25		870.1 471.7 99.1	(5/2+) (3/2+) (5/2-)
1451 9	E
1541 15	E
1831 8	E	(1/2+)
1956.3	C	(9/2+)		610 1088 1781	8 100 42	D,Q	1345.5 870.1 174.2	(7/2+) (5/2+) (7/2-)
2131 9	E
2406 10	E
2557 10	E
2618.3	C E	(11/2+)		662 1273 1286	5 100 30	D,Q	1956.3 1345.5 1332.1	(9/2+) (7/2+) (11/2-)
2653.8	C D E	(15/2-)	0.583 ps 83	1321.7	100	(E2)	1332.1	(11/2-)
2848 10	E
3430 10	E
3470.5	C	(13/2+)		852 1514	5 100	D,Q	2618.3 1956.3	(11/2+) (9/2+)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
3504 11	E
3747 11	E
3766.4	C	(17/2-)		1112	100	D	2653.8	(15/2-)
4139.0	C D	(19/2-)	0.305 ps 42	372 1485.7	5 100	(M1) (E2)	3766.4 2653.8	(17/2-) (15/2-)
4169 12	E
4214.9	C	(15/2+)		744 1597	25 100		3470.5 2618.3	(13/2+) (11/2+)
4295 12	E
5375.0	C			1236	100	D	4139.0	(19/2-)
5409 15	E
5905.0	C D	(23/2-)	< 0.444 ps	530 1766.0	13 100	(M1) (E2)	5375.0 4139.0	(19/2-)
7379.0	D	(25/2-)		1474			5905.0	(23/2-)
7911.0	D	(27/2-)		532 2006			7379.0 5905.0	(25/2-) (23/2-)
10022	D	(31/2-)		2111.5			7911.0	(27/2-)

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - Kπ=7/2- band, α=-1/2 (1998Be69,1994Ca04).
174.2	(7/2-)	≤ 2.1 ns
1332.1	(11/2-)		1157.7	100	D,Q	174.2	(7/2-)
2653.8	(15/2-)	0.583 ps 83	1321.7	100	(E2)	1332.1	(11/2-)
4139.0	(19/2-)	0.305 ps 42	372 1485.7	5 100	(M1) (E2)	3766.4 2653.8	(17/2-) (15/2-)
5905.0	(23/2-)	< 0.444 ps	530 1766.0	13 100	(M1) (E2)	5375.0 4139.0	(19/2-)
7911.0	(27/2-)		532 2006			7379.0 5905.0	(25/2-) (23/2-)
10022	(31/2-)		2111.5			7911.0	(27/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - Kπ=7/2- band, α=+1/2 (1994Ca04).
3766.4	(17/2-)
7379.0	(25/2-)		1474			5905.0	(23/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 3 - POSITIVE-PARITY SIDE band (1994Ca04).
471.7	(3/2+)
870.1	(5/2+)		399 770 871	30 10 100	D D	471.7 99.1 0.0	(3/2+) (5/2-) 3/2-
1345.5	(7/2+)		474 873 1248	100 75 25		870.1 471.7 99.1	(5/2+) (3/2+) (5/2-)
1956.3	(9/2+)		610 1088 1781	8 100 42	D,Q	1345.5 870.1 174.2	(7/2+) (5/2+) (7/2-)
2618.3	(11/2+)		662 1273 1286	5 100 30	D,Q	1956.3 1345.5 1332.1	(9/2+) (7/2+) (11/2-)
3470.5	(13/2+)		852 1514	5 100	D,Q	2618.3 1956.3	(11/2+) (9/2+)
4214.9	(15/2+)		744 1597	25 100		3470.5 2618.3	(13/2+) (11/2+)

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	3/2-	500 ms 15 % ε = 100	E(level): From ¹⁰B(⁴⁰Ca,p2nγ). T_1/2(level): Unweighted av of 472.0 ms 63 (1988HaZB. β⁺’s; ΔE/E scin telescope, tape transport, ms), 508 ms 10 (1985Bu07. 88γ,γ^\|+; low-energy photon system, Ge(Li)), and 520 ms 40 (1985HoZS. βγ(t); He-jet). The discrepancy between the γ and β⁺ measurements is unexplained; 1988HaZB excluded the possibility of contamination by ⁴⁶V. Others: 452 ms 18 (1977Ho25. Eβ+>4.8 MeV; scin) and 460 ms 15 (1977Ed01. 1 MeV\|<Eβ+\|<4 MeV; He-jet chopper, scin) excluded due.
174.2	(7/2-)	≤ 2.1 ns	E(level): Kπ=7/2- band, α=-1/2 (1998Be69,1994Ca04).
471.7	(3/2+)		E(level): POSITIVE-PARITY SIDE band (1994Ca04).
870.1	(5/2+)		E(level): POSITIVE-PARITY SIDE band (1994Ca04).
1332.1	(11/2-)		E(level): Kπ=7/2- band, α=-1/2 (1998Be69,1994Ca04). J^π(level): J\|)J or J\|)J-2 d,Q or d,E2 cascade to (7/2-). Comparison of the γ-ray spectrum and level scheme in ²⁴Mg(²⁸Si,αnγ) with the corresponding spectrum and level scheme for ⁴⁷V.
1345.5	(7/2+)		E(level): POSITIVE-PARITY SIDE band (1994Ca04). J^π(level): From deexcitation patterns and similarity with the mirror nucleus ⁴⁷V.
1956.3	(9/2+)		E(level): POSITIVE-PARITY SIDE band (1994Ca04). J^π(level): From J\|)J or J\|)J-2 γ cascade to (5/2⁺) and deexcitation patterns and similarity with the mirror nucleus ⁴⁷V.
2618.3	(11/2+)		E(level): POSITIVE-PARITY SIDE band (1994Ca04). J^π(level): From J\|)J or J\|)J-2 γ cascade to (5/2⁺) and deexcitation patterns and similarity with the mirror nucleus ⁴⁷V.
2653.8	(15/2-)	0.583 ps 83	E(level): Kπ=7/2- band, α=-1/2 (1998Be69,1994Ca04). J^π(level): J\|)J or J\|)J-2 d,Q or d,E2 cascade to (7/2-). Comparison of the γ-ray spectrum and level scheme in ²⁴Mg(²⁸Si,αnγ) with the corresponding spectrum and level scheme for ⁴⁷V. T_1/2(level): From DSAM in ²⁴Mg(²⁸Si,αnγ),²⁸Si(²⁸Si,2αnγ).
3470.5	(13/2+)		E(level): POSITIVE-PARITY SIDE band (1994Ca04). J^π(level): From J\|)J or J\|)J-2 γ cascade to (5/2⁺) and deexcitation patterns and similarity with the mirror nucleus ⁴⁷V.
3766.4	(17/2-)		E(level): From ²⁴Mg(²⁸Si,αnγ). Kπ=7/2- band, α=+1/2 (1994Ca04).
4139.0	(19/2-)	0.305 ps 42	E(level): Kπ=7/2- band, α=-1/2 (1998Be69,1994Ca04). J^π(level): J\|)J or J\|)J-2 d,Q or d,E2 cascade to (7/2-). Comparison of the γ-ray spectrum and level scheme in ²⁴Mg(²⁸Si,αnγ) with the corresponding spectrum and level scheme for ⁴⁷V. T_1/2(level): From DSAM in ²⁴Mg(²⁸Si,αnγ),²⁸Si(²⁸Si,2αnγ).
4214.9	(15/2+)		E(level): POSITIVE-PARITY SIDE band (1994Ca04). J^π(level): From deexcitation patterns and similarity with the mirror nucleus ⁴⁷V.
5905.0	(23/2-)	< 0.444 ps	E(level): Kπ=7/2- band, α=-1/2 (1998Be69,1994Ca04). J^π(level): J\|)J or J\|)J-2 d,Q or d,E2 cascade to (7/2-). Comparison of the γ-ray spectrum and level scheme in ²⁴Mg(²⁸Si,αnγ) with the corresponding spectrum and level scheme for ⁴⁷V. T_1/2(level): From DSAM in ²⁴Mg(²⁸Si,αnγ),²⁸Si(²⁸Si,2αnγ).
7379.0	(25/2-)		E(level): From ²⁴Mg(²⁸Si,αnγ). Kπ=7/2- band, α=+1/2 (1994Ca04).
7911.0	(27/2-)		E(level): Kπ=7/2- band, α=-1/2 (1998Be69,1994Ca04). Placed from 9841, 31/2-, in ¹⁰B(⁴⁰Ca,p2nγ). J^π(level): From the comparison of the γ-ray spectrum and level scheme in ²⁴Mg(²⁸Si,αnγ) with the corresponding spectrum and level scheme for ⁴⁷V.
10022	(31/2-)		E(level): Kπ=7/2- band, α=-1/2 (1998Be69,1994Ca04). Placed from 9841, 31/2-, in ¹⁰B(⁴⁰Ca,p2nγ). J^π(level): From the comparison of the γ-ray spectrum and level scheme in ²⁴Mg(²⁸Si,αnγ) with the corresponding spectrum and level scheme for ⁴⁷V.