List of levels for 78BR

Authors: Ameenah R. Farhan, Balraj Singh | Citation: Nucl. Data Sheets 110, 1917 (2009) | Cutoff date: 30-Jun-2009

E(level): From least-squares fit to Eγ’s, assuming Δ(Eγ)=0.5 keV when not given. For levels populated in transfer reactions only, the values are from weighted averages of available data. Estimated uncertainty in level energies from (³He,d) only is ≈10 keV

J^π(level): Assignments for low-spin (J|<4) are mainly from ⁷⁹Br(p,d) and ⁷⁷Se(³He,d) particle transfer reactions. The target nuclei ⁷⁹Br and ⁷⁷Se have g.s. spins 3/2- and 1/2-, respectively. The unpaired proton in ⁷⁹Br is expected to be in 2p_3/2 orbital and unpaired neutron in ⁷⁷Se in the 2p_1/2 orbital. In (p,d), the low-lying levels in ⁷⁸Br are expected to be from neutron holes in 2p_1/2, 1f_5/2, 2p_3/2, 1g_9/2 and 2d_5/2 orbitals. In (³He,d), the low-lying states in ⁷⁸Br are expected to be from protons in 2p_3/2, 1f_5/2 and 2p_1/2 orbitals. The levels populated in both reactions. The assignments for high-spin (J>4) levels are mainly from band structures in ⁷⁰Zn(¹¹B,3nγ) reaction and γγ(θ) data for only selected transitions; ascending spins are assumed with the increase in excitation energy.

T_1/2(level): From γ(t) in (α,nγ) (1979Kl05) unless otherwise stated. Uncertainty of 10% is added in quadrature to the quoted uncertainties by 1979Kl05, see comment in (α,nγ) dataset.

M(γ): From γ(θ) data in a,2npg),(⁷Li,5nγ) and γγ(θ)(DCO) in (¹¹B,3nγ), unless otherwise stated.

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
32.32	(2-)	11.3 ns 30	32.3 1	[E1]	2.29	B(E1)(W.u.)=0.00030 8, α=2.29, α(K)=2.02 4, α(L)=0.232 4, α(M)=0.0362 6, α(N)=0.00312 6, α(N+)=0.00312 6
55.11	(1,2)+	7.5 ns 11	55.1 1	[M1]	0.609	B(M1)(W.u.)=0.0109 16, α=0.609, α(K)=0.538 8, α(L)=0.0605 9, α(M)=0.00963 15, α(N)=0.000890 14, α(N+)=0.000890 14
180.89	(4+)	119.4 µs 10 % IT = 100	148.55 10	[M2]	0.295	B(M2)(W.u.)=0.1519 18, α=0.295, α(K)=0.257 4, α(L)=0.0325 5, α(M)=0.00523 8, α(N)=0.000477 7, α(N+)=0.000477 7
227.67	(5+)	84 ns 8	46.8 2	(M1+E2)	8	α=8 7, α(K)=6 5, α(L)=1.4 13, α(M)=0.22 21, α(N)=0.017 16, α(N+)=0.017 16

Q(β-)=727 keV 4	S(n)= 8289 keV 5	S(p)= 6142 keV 4	Q(α)= -5017 keV 4
Reference: 2012WA38

References:
A	⁷⁸Br IT decay (119.4 μs)	B	⁷⁰Zn(¹¹B,3nγ)
C	⁷⁵As(α,nγ)	D	⁷⁶Se(α,NPG),⁷⁸Se(p,nγ),
E	⁷⁷Se(³He,d)	F	⁷⁷Se(α,2npγ),⁷⁶Ge(⁷Li,5nγ)
G	⁷⁸Se(p,n)	H	⁷⁸Se(p,nγ)
I	⁷⁹Br(p,d)

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 F G H I	1+	6.45 m 4 % ε ≥ 99.99 % β^- ≤ 0.01
32.32 8	A B C D F G H I	(2-)	11.3 ns 30	32.3 1	100	[E1]	0.0	1+
55.11 10	C G H I	(1,2)+	7.5 ns 11	55.1 1	100	[M1]	0.0	1+
125.14 11	C E G H I	(1,2)+		125.0 2	100		0.0	1+
180.89 13	A B C D F H	(4+)	119.4 µs 10 % IT = 100	148.55 10	100	[M2]	32.32	(2-)
193.40 16	C E G H	(0:3)(+)		193.59 20	100		0.0	1+
197.24 14	C E H I	(1,2,3)(+)	4.7 ns 5	71.99 20 141.8 5 164.6 5 197.0?	100 6 9 6 36 6		125.14 55.11 32.32 0.0	(1,2)+ (1,2)+ (2-) 1+
204.40 10	C H I	(0:3)(+)	5.9 ns 6	79.2 2 204.41 10	6 1 100 8		125.14 0.0	(1,2)+ 1+
227.67 18	B D F	(5+)	84 ns 8	46.8 2	100	(M1+E2)	180.89	(4+)
242.82 17	C F G I	(2,3)-	17 ns 2	46.3 5 242.85 2	≈200 100 10	[E1]	197.24 0.0	(1,2,3)(+) 1+
244.62 15	C E G H	(2,3)+		212.45 20 244.7 5	100 9 89 27		32.32 0.0	(2-) 1+
263.36 15	C G H I	(3,4)-		231.07 20 263.34 20	100 9 74 9		32.32 0.0	(2-) 1+
265.03 18	C D F G	(5-)	5.1 ns 5	37.41 10 84.05 20	100 8 48 4	D	227.67 180.89	(5+) (4+)
284.3 5 ?	H			284.3 5 ?	100		0.0	1+
292.2 5 ?	H			292.2 5 ?	100		0.0	1+
311.94 12	C G H			114.3 5 118.74 20 186.5 5 279.62 10 311.6 5	51 100 16		197.24 193.40 125.14 32.32 0.0	(1,2,3)(+) (0:3)(+) (1,2)+ (2-) 1+
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
329.52 13	C E G H I	(1,2)+		204.41 10 329.41 20	100 13 4		125.14 0.0	(1,2)+ 1+
337.85 20	B C D F	(6+)	7.3 ns 12	72.88 20 110.16 10	3.2 2 100 7	D D	265.03 227.67	(5-) (5+)
367.4 3	G H I	(1:4)-		75.0 5 ? 102.8 5 161.91 10 ? 334.9 5 367.2 5	38 100 40		292.2 265.03 204.40 32.32 0.0	(5-) (0:3)(+) (2-) 1+
389 4	G I	(3,4)-
390.9 3	C E G H	(2,3)+		61.0 5 ? 98.0 5 ? 186.5 5 358.2 5 391.3 5	71 33 100 48		329.52 292.2 204.40 32.32 0.0	(1,2)+ (0:3)(+) (2-) 1+
414.8 5	G H			414.8 5	100		0.0	1+
423.4 4	B C D F	(6-)	< 25 ns	158.5? 195.8	100	(D)	265.03 227.67	(5-) (5+)
433.5 4	C E G H I	(1,2)+		103.46 20 ? 239.2 5 ? 308.1 5 433.7 5	100 29 99 59		329.52 193.40 125.14 0.0	(1,2)+ (0:3)(+) (1,2)+ 1+
437.74 22	B C D F	(7+)	< 3 ns	99.89 10	100	D	337.85	(6+)
447.05 23	C G H	(0+:3+)		80.0 5 ? 202.41 20 414.3 5 ? 447.2 5	100 15 32 31		367.4 244.62 32.32 0.0	(1:4)- (2,3)+ (2-) 1+
457.22 18	C F	(0:3+)		261.30 20 457.2 2	100 12 44 12		197.24 0.0	(1,2,3)(+) 1+
467.81 24	B C D F	(8+)		30.07 10	100	(D)	437.74	(7+)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
473.9 3 ?	C D			208.84 20 ?	100		265.03	(5-)
476.93 15	C G H I	(3-,4-)		195.0 5 ? 232.36 10 274.4 5 ? 279.62 10 477.4 5	100 7 49 5 6 4		284.3 244.62 204.40 197.24 0.0	(2,3)+ (0:3)(+) (1,2,3)(+) 1+
498.5 5	C E G H I	(1,2)+		215.0 5 ? 302.6 5 497.9 14	100 19		284.3 197.24 0.0	(1,2,3)(+) 1+
508 10 ?	G
526.7 6	G H			159.3 5	100		367.4	(1:4)-
551 4	G I	(0:3)+
579.43 25	C E G I	(2,3)+		102.5 2	100		476.93	(3-,4-)
601.2 3 ?	C D			336.15 20 ?	100		265.03	(5-)
643 4	I	(0:3)+
647.59 22	C F	(4)		404.9 2 419.6 3	100 15 60 10		242.82 227.67	(2,3)- (5+)
663 4	I	(0:3)+&(2:6)-
684.9 4	B C D	(7-)		210.73 20 ? 261.5 347.0 419.6 3 ? 457.3	73 14 50 9 100 18		473.9 423.4 337.85 265.03 227.67	(6-) (6+) (5-) (5+)
717 4	I	(1,2,3)+
793.3 3	C E I	(1,2)+		213.88 10	100		579.43	(2,3)+
828.3 7	B C D	(8-)		404.9	100		423.4	(6-)
854 4	I	(1,2,3)+
868 4	I	(1,2,3)+
891 4	I	(1,2,3)+
912.0 4	C E I	(1,2)+		118.74 20	100		793.3	(1,2)+
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
930 4	I	(1,2,3)+
977.1 3	B D F	(9+)		509.2 2	100		467.81	(8+)
989 4	I	(0:3)+
1001.0 4	C I	(1,2,3)+		207.69 20	100		793.3	(1,2)+
1026 4	I	(0:3)+
1030.2 4	B C D	(8-)		345.3 592.3 606.8	18 3 13 3 100 8		684.9 437.74 423.4	(7-) (7+) (6-)
1039 4	I	(0:3)+
1060 4	E I	(1+,2+)
1130 4	I	(1,2,3)(+)
1173 4	E I	(2,3)+
1188 4	I	(1,2,3)(+)
1200 4	I	(0:3)(+)
1243 4	I	(0:3)+
1261 4	E I	(2,3)+
1371.8 3	B C D F	(10+)		394.5 3 904.1 2	19 3 100 15	(Q)	977.1 467.81	(9+) (8+)
1395	E	(2,3)+
1463.1 5	B C D	(9-)		432.9 778.2	45 7 100 17		1030.2 684.9	(8-) (7-)
1486	E	(0,1)+
1570	E	(LE 3)+
1691	E	(2,3)+
1746	E	(0:3)+
1823	E	(2+,3+)
1905.0 7	B	(10-)		874.8	100		1030.2	(8-)
1940.5 4	B C D F	(11+)		568.5 3 963.6	100 14 11.6 23	D	1371.8 977.1	(10+) (9+)
1985	E
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
2062	E	(2+,3+)
2162	E	(2+,3+)
2455.5 7	B	(11-)		992.4	100		1463.1	(9-)
2585.3 5	B D	(12+)		1213.5	100	(Q)	1371.8	(10+)
3016.5 8	B	(12-)		1111.5	100		1905.0	(10-)
3148.8 6	B	(13+)		563.6 1208.3	100 16 95 16	(D) (Q)	2585.3 1940.5	(12+) (11+)
3619.9 9	B	(13-)		1164.4	100		2455.5	(11-)
4049.3 10	B	(14+)		1464	100		2585.3	(12+)
4296.5 10	B	(14-)		1280	100		3016.5	(12-)
4541.8 10	B	(15+)		1393	100		3148.8	(13+)
4921.9 10	B	(15-)		1302	100		3619.9	(13-)
5604.3 10	B	(16+)		1555	100		4049.3	(14+)
6086.9 10	B	(17+)		1545	100		4541.8	(15+)

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - Band based on (8⁺), α=0
467.81 24	(8+)
1371.8 3	(10+)		394.5 3 904.1 2	19 3 100 15	(Q)	977.1 467.81	(9+) (8+)
2585.3 5	(12+)		1213.5	100	(Q)	1371.8	(10+)
4049.3 10	(14+)		1464	100		2585.3	(12+)
5604.3 10	(16+)		1555	100		4049.3	(14+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - Band based on (9⁺), α=1
977.1 3	(9+)
1940.5 4	(11+)		568.5 3 963.6	100 14 11.6 23	D	1371.8 977.1	(10+) (9+)
3148.8 6	(13+)		563.6 1208.3	100 16 95 16	(D) (Q)	2585.3 1940.5	(12+) (11+)
4541.8 10	(15+)		1393	100		3148.8	(13+)
6086.9 10	(17+)		1545	100		4541.8	(15+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 3 - Band based on (6-), α=0
423.4 4	(6-)	< 25 ns
1030.2 4	(8-)		345.3 592.3 606.8	18 3 13 3 100 8		684.9 437.74 423.4	(7-) (7+) (6-)
1905.0 7	(10-)		874.8	100		1030.2	(8-)
3016.5 8	(12-)		1111.5	100		1905.0	(10-)
4296.5 10	(14-)		1280	100		3016.5	(12-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 4 - Band based on (7-), α=1
684.9 4	(7-)
1463.1 5	(9-)		432.9 778.2	45 7 100 17		1030.2 684.9	(8-) (7-)
2455.5 7	(11-)		992.4	100		1463.1	(9-)
3619.9 9	(13-)		1164.4	100		2455.5	(11-)
4921.9 10	(15-)		1302	100		3619.9	(13-)

E(level)	J^π(level)	T_1/2(level)	Comments
244.62	(2,3)+		XREF: E(249).
265.03	(5-)	5.1 ns 5	XREF: C(?).
329.52	(1,2)+		XREF: E(322)γ(322).
337.85	(6+)	7.3 ns 12	XREF: C(?).
367.4	(1:4)-		XREF: γ(361).
390.9	(2,3)+		XREF: E(383).
423.4	(6-)	< 25 ns	XREF: C(?)F(?). E(level): Band based on (6-), α=0.
433.5	(1,2)+		XREF: γ(427)I(430).
437.74	(7+)	< 3 ns	XREF: C(?).
457.22	(0:3+)		XREF: C(?).
467.81	(8+)		XREF: C(?). E(level): From (p,nγ) only. Band based on (8⁺), α=0.
473.9			XREF: C(?).
476.93	(3-,4-)		XREF: γ(465)H(479).
498.5	(1,2)+		XREF: C(?)E(506)γ(491)I(495).
551	(0:3)+		XREF: γ(545).
579.43	(2,3)+		XREF: E(573)I(579).
601.2			XREF: C(?).
647.59	(4)		XREF: C(?).
684.9	(7-)		XREF: C(?). E(level): Band based on (7-), α=1.
828.3	(8-)		XREF: C(?).
977.1	(9+)		E(level): Band based on (9⁺), α=1.
1001.0	(1,2,3)+		XREF: I(1005).
1030.2	(8-)		XREF: C(?). E(level): Band based on (6-), α=0.
1261	(2,3)+		XREF: E(1254).
1371.8	(10+)		XREF: C(?). E(level): From (p,nγ) only. Band based on (8⁺), α=0.
E(level)	J^π(level)	T_1/2(level)	Comments
1463.1	(9-)		XREF: C(?). E(level): Band based on (7-), α=1.
1905.0	(10-)		E(level): Band based on (6-), α=0.
1940.5	(11+)		XREF: C(?). E(level): Band based on (9⁺), α=1.
2455.5	(11-)		E(level): Band based on (7-), α=1.
2585.3	(12+)		E(level): From (p,nγ) only. Band based on (8⁺), α=0.
3016.5	(12-)		E(level): Band based on (6-), α=0.
3148.8	(13+)		E(level): Band based on (9⁺), α=1.
3619.9	(13-)		E(level): Band based on (7-), α=1.
4049.3	(14+)		E(level): From (p,nγ) only. Band based on (8⁺), α=0.
4296.5	(14-)		E(level): Band based on (6-), α=0.
4541.8	(15+)		E(level): Band based on (9⁺), α=1.
4921.9	(15-)		E(level): Band based on (7-), α=1.
5604.3	(16+)		E(level): From (p,nγ) only. Band based on (8⁺), α=0.
6086.9	(17+)		E(level): Band based on (9⁺), α=1.

E(level)	E(gamma)	Comments
32.32	32.3	E(γ): from ⁷⁸Br IT decay (119.2 μs)
204.40	204.41	E(γ): Multiply placed
242.82	46.3	E(γ): 46.3γ and 46.8γ (from 227.67 level) form an unresolved doublet
284.3	284.3	E(γ): From (p,nγ) only
292.2	292.2	E(γ): From (p,nγ) only
311.94	114.3	E(γ): From (p,nγ) only
	118.74	E(γ): Multiply placed
	186.5	E(γ): Multiply placed
	279.62	E(γ): Multiply placed
329.52	204.41	E(γ): Multiply placed
367.4	75.0	E(γ): From (p,nγ) only
	102.8	E(γ): From (p,nγ) only
	334.9	E(γ): From (p,nγ) only
	367.2	E(γ): From (p,nγ) only
390.9	61.0	E(γ): From (p,nγ) only
	98.0	E(γ): From (p,nγ) only
	186.5	E(γ): Multiply placed
	358.2	E(γ): From (p,nγ) only
414.8	414.8	E(γ): Multiply placed. From (p,nγ) only
423.4	195.8	E(γ): this γ most likely corresponds to 196.0 3 in ⁷⁷Se(α,2npγ), ⁷⁵Ge(⁷Li,5nγ) (1982Be03), where it is placed as a g.s. transition
433.5	239.2	E(γ): From (p,nγ) only
447.05	80.0	E(γ): From (p,nγ) only
447.05	447.2	E(γ): From (p,nγ) only
476.93	195.0	E(γ): From (p,nγ) only
	274.4	E(γ): From (p,nγ) only
	279.62	E(γ): Multiply placed
E(level)	E(gamma)	Comments
498.5	215.0	E(γ): From (p,nγ) only
498.5	302.6	E(γ): From (p,nγ) only
526.7	159.3	E(γ): From (p,nγ) only
912.0	118.74	E(γ): Multiply placed