List of levels for 76GE

Author: Balraj Singh | Citation: Nucl. Data Sheets 74,63 (1995) | Cutoff date: 22-Dec-1994

Other studies:

⁷⁶Ge ββ decay (to ⁷⁶Se) through neutrino-less or 2-neutrino decay:

⁷⁶Ge ββ decay (experimental): 1994Ba15, 1993Be14, 1992Re03 (also 1991Tr07,1987Fi05, 1984Fo06), 1992Be20 (also 1992Ba25), 1991Mo28 (also 1991Mo27,1991Mo23,1988Mo35,1985Hu01,1983Le27), 1991Ca34 (also 1987Ca21,1986Ca07), 1991Av04 (also 1991Av01,1990Mi23,1987Av05, 1987Av01,1986Av03,1985Av02,1983Av01,1979Av01,1978Pi07), 1991Hy01 (also 1993Hy02, 1984El01), 1990Bu15, 1990Va18, 1988Ok01 (also 1987Ej01,1986Ka33,1986Ej01), 1986Zd01 (also 1985Zd01), 1984Si08, 1984Fi16 (also 1984Be48,1983Be65,1982Be20, 1973Fi01,1970Fi09, 1967Fi14), 1952Fr23

⁷⁶Ge ββ decay (compilations and analysis): 1993Kl01, 1992Wu07, 1991Kl04, 1988Ca03

⁷⁶Ge ββ decay (theoretical): 1994Ci05, 1994Fa04, 1994Kr05, 1994St04, 1994Su03, 1993Su12, 1993Su02, 1993St17, 1993St05, 1993Wu02, 1993Mu08, 1993Kr20, 1993Kr15, 1993Hi07, 1993Ch07, 1993Ch34, 1993Bu19, 1993Bu01, 1992St10, 1992St07, 1992Su11, 1992Pa07, 1991Wu07, 1991Su14, 1991Su07, 1991Mu10, 1991Ha24, 1991Fa13, 1991Fa01, 1991Ci02, 1991Bi09, 1990Su03, 1990Sh02, 1990Pi03, 1990Hi07, 1990Hi06, 1990Fa13, 1990Ci06, 1990Ba60, 1989Le28, 1989En02, 1989Ba05, 1989Al34, 1988Ye02, 1988Vo07, 1988To10, 1988Si03, 1988Mu03, 1988Mo26, 1988Ku31, 1988En04, 1988En02, 1988Do06, 1988Al34, 1987To16, 1987Ci05, 1986Vo11, 1986To03, 1986Gr23, 1986Fa07, 1985Vo11, 1985To13, 1985Gr11, 1985Gr03, 1985Do13, 1985Bo08, 1984Kl07, 1983Ha13, 1983Do12, 1982Za05, 1981Ha21, 1970BoZC

⁷⁶Ge(e,e) E=225 MeV: 1990Kh03. Other: 1983Em01

⁷⁶Ge(γ,α) E=18-25 MeV: 1990An13, measured emission of α’s in GDR region

Giant dipole resonances in (γ,xn): 1976Ca06

⁷⁶Ge(p,p’γ): 1983Ra02, measured σ

Mass measurement: 1977De20, 1976De21, 1964Ba03, 1963Ri07

Mass difference (⁷⁶Ge-⁷⁶Se): 1991Hy01 (also 1993Hy02,1985El01,1984El01,1984ElZY)

⁷⁶Ge(π⁺,π^-) E=164 MeV: 1993Ka40, 1986Fa07, calculated σ(θ)

⁷⁶Ge(³²S,³²S) E=3.4-7 MeV/nucleon: 1982Gu19, measured fission

⁷⁶Ge(³²S,³²S) E=158.3 MeV: 1984Sc28, calculated ratio of elastic to Rutherford σ’s

Nuclear structure calculations (level, moments, syst etc.): 1994An08, 1994Jo03, 1994Li18, 1993Ch07, 1992Er02, 1992Hs02, 1992Bu05, 1991Pe09, 1988Ra35, 1988Do08, 1987Fo17, 1986Ta04, 1986Jo03, 1985Na12, 1984We04, 1984Ba28, 1983Ta03, 1983Gi06, 1983Du04, 1982Le17, 1982Ko10, 1982Ah06, 1981We09, 1980Sh23, 1980Ko22, 1978De12, 1976La06

Q-value: Note: Current evaluation has used the following Q record

Q-value: Q(β-β^-)=2038.6 3 (1991Hy01), 2038.7 5 (1993Au05)

E(level): For levels populated in γ-ray studies, E(level)’s are from least-squares fit to Eγ’s. In other cases values are averages from different reaction studies. In (p,p’) and (α,α’), values for similar levels differ systematically (higher by 12 keV to 45 keV in the 3700-4600 range). Values from (p,p’) are adopted here (since many more levels are reported in (p,p’) than in (α,α’)), although, it is difficult to know as to which dataset is more accurate

J^π(level): log ft values from ⁷⁶Ga decay have not been used in assigning Jπ’s since Jπ(⁷⁶Ga g.s.)=(3-) is only tentative. Moreover, several γ-ray placements remain uncertain. For levels above ≈3000, values are given in parentheses when available only from L(p,p’) and/or L(t,p) due to following reasons: 1. The agreement of σ(θ) fits to DWBA is not good over the whole angular range. 2. The correspondence between levels in different reactions is not unique due to large level density and large uncertainties in E(level) from particle reactions

T_1/2(level): From ΔS(a) in (n,n’γ) (1990DoZU,1984KoZN) for levels above 2 MeV, below this values are from B(E2) in Coul. ex. see 1982AuZW also for measurement of Gamow-Teller strength for double β^- decaying nuclei

E(γ): From ⁷⁶Ga β^-, unless seen in (n,n’γ) only

I(γ): Photon branching ratios, primarily from ⁷⁶Ga β^- decay

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Mixing Ratio	Additional Data
562.93	2+	18.2 ps 2	562.93 3	E2		B(E2)(W.u.)=29 1
1108.44	2+	8.0 ps 15	545.51 3	E2+M1	+3.5 15	B(E2)(W.u.)=42 9, B(M1)(W.u.)=8E-4 4
1108.44	2+	8.0 ps 15	1108.41 8	E2		B(E2)(W.u.)=0.90 22
1410.08	4+	1.8 ps 4	847.15 5	E2		B(E2)(W.u.)=38 9
1911.07	0+	> 0.8 ps	1348.13 13			B(E2)(W.u.)<7.4
2503.6	2+	0.24 ps +55-10	2503.6 5			B(E2)(W.u.)=0.4 3
2692.40	3-	0.28 ps +15-8	2691.6 4			B(E3)(W.u.)=700 350
2919.79	(1,2+)	0.21 ps +10-6	2919.85 10			B(E2)(W.u.)=0.5 2
3141.51	2+	0.06 ps +7-4	3141.40 10			B(E2)(W.u.)=1.1 +22-6

Q(β-)=-921.5 keV 9	S(n)= 9427.24 keV 5	S(p)= 12037.3 keV 25	Q(α)= -7492.3 keV 22
Reference: 2012WA38

References:
A	⁷⁶Ga β^- decay (32.6 S)	B	⁷⁴Ge(t,p)
C	⁷⁴Ge(¹⁸O,¹⁶O)	D	⁷⁶Ge(n,n’)
E	⁷⁶Ge(n,n’γ)	F	⁷⁶Ge(p,p’), (pol p,p’)
G	⁷⁶Ge(pol d,d’)	H	⁷⁶Ge(α,α’)
I	⁷⁶Ge(¹⁶O,¹⁶O’), (¹⁸O,¹⁸O’)	J	Coulomb Excitation
K	⁸⁰Se(d,⁶Li)

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 J K	0+	STABLE
562.93 3	A B C D E F G H I J K	2+	18.2 ps 2	562.93 3	100	E2	0.0	0+
1108.44 4	A B E F H J K	2+	8.0 ps 15	545.51 3 1108.41 8	100 2 68 7	E2+M1 E2	562.93 0.0	2+ 0+
1410.08 5	A B E F H J K	4+	1.8 ps 4	847.15 5	100	E2	562.93	2+
1539.46 6	A E F	3(+)		431.0 5 976.50 5	100 7 50 2	D+Q	1108.44 562.93	2+ 2+
1911.07 11	A B E F H J K	0+	> 0.8 ps	1348.13 13	100		562.93	2+
2019.87 10	A B E F K	(4+)		911.40 10	100		1108.44	2+
2204.9 4	E	(1,2+)	0.010 ps 4	1097.4 5 2203.8 5			1108.44 0.0	2+ 0+
2284.22 24	A F	(3)-		1175.7 5	100		1108.44	2+
2456 5	F
2478.2 5	E	(1,2+)		1915 1 2478.2 5			562.93 0.0	2+ 0+
2503.6 4	B E F	2+	0.24 ps +55-10	1395.1 5 2503.6 5	100 43		1108.44 0.0	2+ 0+
2554 5 ?	F
2591.10 16	A E	(1+,2+)		1051.7 2 1482.5 3 2591.0 4	95 14 100 15 55 10		1539.46 1108.44 0.0	3(+) 2+ 0+
2624 5 ?	F
2654.51 21	A E	(LE 4)		1546.0 4 2091.9 4	100 20 42 10		1108.44 562.93	2+ 2+
2692.40 8	A B E F H	3-	0.28 ps +15-8	1282.9 4 1583.9 5 2129.46 8 2691.6 4	<13 9 3 100 3 7 2		1410.08 1108.44 562.93 0.0	4+ 2+ 2+ 0+
2733.4 7	B E F H	4+	0.17 ps +18-8	1194.0 5			1539.46	3(+)
2747.76 8	A E F H	(1 TO 4)	0.33 ps +33-12	1208.02 13 1639.30 10 2185.20 17	28 2 100 3 9 1		1539.46 1108.44 562.93	3(+) 2+ 2+
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
2768.76 14	A B E F H	2+		1358.9 6 1660.30 14	24 8 100 7		1410.08 1108.44	4+ 2+
2841.57 13	A B E F	2+	0.028 ps 8	1732.70 25 2278.80 17	100 9 61 5		1108.44 562.93	2+ 2+
2897.7 5	B E F	0+		2334.7 5	100		562.93	2+
2919.79 7	A E	(1,2+)	0.21 ps +10-6	1811.10 12 2356.88 12 2919.85 10	9.2 6 27 2 100 4		1108.44 562.93 0.0	2+ 2+ 0+
2921 5	F H	3-
2962.2	B E F H	(5)-
2994 5	B F H	4+
3007.8 4	E	(1,2+)	0.026 ps +28-13	1898.3 5 3008.6 5	100 100		1108.44 0.0	2+ 0+
3041.0 6	B E F	(2+)	0.23 ps +35-10	1130.2 5 2477.7 5			1911.07 562.93	0+ 2+
3052.5 7	E F	(1 TO 5)	0.030 ps +14-10	1513.1 5	100		1539.46	3(+)
3071 5	F
3090 5 ?	F
3131.8 7	E F	(LE 4)		2023.3 5	100		1108.44	2+
3141.51 7	A B E F	2+	0.06 ps +7-4	1230.2 5 2578.55 9 3141.40 10	53 2 100 5		1911.07 562.93 0.0	0+ 2+ 0+
3166 5	F
3182.21 6	A B E F	(2+)	0.25 ps +35-11	1642.80 15 2073.75 7 2619.20 10	22 2 100 3 53 2		1539.46 1108.44 562.93	3(+) 2+ 2+
3195 5	B F	(4-,5-,6-)
3224 5	F
3231.8 4	A B F H	4+		2668.8 4 ?	100		562.93	2+
3268 5	F H	(4+)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
3312.33 12	A B F H	3-		1902.2 2 2203.86 16	31 3 100 8		1410.08 1108.44	4+ 2+
3317 5	B F	(0+)
3322.85 7	A E	(2+,3,4+)	0.16 ps +14-6	1912.7 1 2214.36 8 2759.95 14	26 2 100 3 49 3		1410.08 1108.44 562.93	4+ 2+ 2+
3334.7 3 ?	A	(2+)		1924.6 3 ? 3334.6 5 ?	100 14 97 21		1410.08 0.0	4+ 0+
3349 5	F
3391 5	F H	(4+,5-)
3409.19 19	A F	(1 TO 4)		661.4 2 ?	100		2747.76	(1 TO 4)
3420.4 5	E	(1,2+)		3420.3 5	100		0.0	0+
3439 5	F
3453 5	F	(3+,4+,5+)
3477.65 17	A B	(1 TO 4)		335.9 5 ? 2369.8 6 ? 2914.6 2 ?	100 25 5 2 14 2		3141.51 1108.44 562.93	2+ 2+ 2+
3484.1 9	E F H	3-		2074 1 2921 1			1410.08 562.93	4+ 2+
3506 5	F
3533 5	F
3545 5	B F H	2+
3585 5	F H	(2)+
3606 5	F
3632.75 10	A	(2+)		1612.7 3 1721.9 7 2524.0 2 3069.90 13	49 7 16 5 86 6 100 6		2019.87 1911.07 1108.44 562.93	(4+) 0+ 2+ 2+
3640 5	B F H	(4-,5-,6-)
3658 5	B F H
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
3691 5	F
3721 5	B F H	(5)-
3748 5	F H	2+
3788 5	B F
3805 5	B F
3815 5	F
3848 5	F
3868 5	F
3883 5	B F H
3887.05 19	A B F H	(3-)		2347.40 25 2476.60 40 2779.1 4 3325.2 12	55 6 27 6 100 10 14 7		1539.46 1410.08 1108.44 562.93	3(+) 4+ 2+ 2+
3951.89 7	A	(1,2+)		1259.9 5 2040.70 25 2843.50 9 3388.75 12 3951.70 14	7 2 8 2 38 2 67 4 100 8		2692.40 1911.07 1108.44 562.93 0.0	3- 0+ 2+ 2+ 0+
3972 5	F H	(4+)
3997 5	F H	4+
4026 5 ?	F
4056 5	F
4073 5	F H
4099 5	F H	5-
4122.3 4 ?	A F	(1,2+)		3559.5 4 ? 4121.8 5 ?	100 8 43 6		562.93 0.0	2+ 0+
4153 5	F H
4192.85 12 ?	A F	(2+,3,4+)		1273.05 10 ? 2782.70 40 ?	100 6 84 7		2919.79 1410.08	(1,2+) 4+
4209 5	F H	3-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
4239.40 15	A F	(1 TO 4)		927.05 10 ? 3130.7 6 ?	100 6 23 5		3312.33 1108.44	3- 2+
4249 5	F H	4+
4272 5	F
4326.5 2	A F	(1 TO 4)		1014.2 2 ? 1634.0 2 ?	31 5 100 5		3312.33 2692.40	3- 3-
4363.5 2	A F H	4+		885.83 10 ? 1443.9 5 ?	100 8 20 5		3477.65 2919.79	(1 TO 4) (1,2+)
4399 5	F H	(3+,4+,5+)
4426 10	F H
4444 10	F	(3+,4+,5+)
4476.5 2 ?	A F	(LE 4)		843.8 2 ? 3913.3 5 ?	100 10 11 3		3632.75 562.93	(2+) 2+
4488 10	F H	3-
4536 10	F H	(3+,4+,5+)
4570 10	F H
4611 10	F H	(3-)
4659 10	F H	(5-)
4698 10	F
4719.9 2	A	(2,3,4)		1310.6 3 ? 1878.3 2 2435.6 3	75 13 98 11 100 13		3409.19 2841.57 2284.22	(1 TO 4) 2+ (3)-
4736 10	F
4767 10	F
4784.1 3 ?	A	(1 TO 4)		1461.2 3 ? 3675.60 45 ?	74 15 100 11		3322.85 1108.44	(2+,3,4+) 2+
4812.5 2 ?	A F	(2+,3,4+)		1892.7 2 ? 3402.4 3 ?	100 7 33 5		2919.79 1410.08	(1,2+) 4+
4814.8 3 ?	A F	(1 TO 4)		1182.1 3 ? 1502.3 5 ?	100 15 96 13		3632.75 3312.33	(2+) 3-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
4839 10	F	(3+,4+,5+)
4868 10	F
4939 10	F
5122.48 14	A	(1 TO 4)		1489.6 4 1940.30 14 1980.4 5	34 10 100 7 32 6		3632.75 3182.21 3141.51	(2+) (2+) 2+
5276 10	F
5522.6 2	A	(1 TO 4)		1282.9 4 ? 2680.9 3 2868.1 2	<81 92 10 100 14		4239.40 2841.57 2654.51	(1 TO 4) 2+ (LE 4)
5663.37 15	A	(2+)		2481.1 4 2970.90 15 3752.10 50 4253.3 5	50 10 100 12 42 9 57 9		3182.21 2692.40 1911.07 1410.08	(2+) 3- 0+ 4+
5749.9 4 ?	A	(1 TO 4)		2981.2 4 ? 3465.5 4 ?	100 20 68 13		2768.76 2284.22	2+ (3)-
5883.0 3 ?	A	(1 TO 4)		2700.5 4 ? 3190.6 3 ?	94 16 100 13		3182.21 2692.40	(2+) 3-
6021.1 3 ?	A	(1 TO 4)		3328.7 8 ? 3366.5 3 ? 3736.90 45 ?	100 30 73 14 80 20		2692.40 2654.51 2284.22	3- (LE 4) (3)-
6065.2 4 ?	A	(1 TO 4)		2882.9 9 ? 3145.3 4 ?	47 16 100 20		3182.21 2919.79	(2+) (1,2+)

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	0+	STABLE	1990Va18 give T_1/2(0 neutrino decay)>1.3×10²⁴ y, T_1/2(2 neutrino decay)=9×10²⁰ y 1, T_1/2(0 neutrino, B (Majoron) decay)>1×10²² y. T_1/2(2 neutrino decay)=1.42×10²¹ y 13 (1994Ba15). See references quoted above for other experimental T_1/2 values and theoretical calculations of ⁷⁶Ge ββ decay.
562.93	2+	18.2 ps 2	μ=+0.838 46 (1989Ra17,1984Pa20), Q=-0.19 6 (1989Ra17,1980Le16) β₂(coul.ex.)=0.267 (1980Le24).
1108.44	2+	8.0 ps 15	β₂(coul.ex.)=0.047 (1980Le24).
1410.08	4+	1.8 ps 4	β₄(pol p,p’)=0.064 11, 0.024 6, 0.020 20, 0.001 (1993Mo05,1986MoZR), 0.02 ((p,p’),1983Ra32).
2692.40	3-	0.28 ps +15-8	β₃(α,α’)=0.11 (1988Ba70).
2921	3-		2921 level is treated as different from 2920 level since an intense g.s. transition from 2920 level is inconsistent with L(α,α’)=3 for a 2921 group.
3141.51	2+	0.06 ps +7-4	XREF: F(3150).
3231.8	4+		XREF: F(3240).
3409.19	(1 TO 4)		XREF: F(3402). J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
3477.65	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
3883			XREF: H(3871).
3887.05	(3-)		XREF: F(3904)H(3893).
3972	(4+)		XREF: H(3952).
3997	4+		XREF: H(3978).
4073			XREF: H(4052).
4099	5-		XREF: H(4073).
4153			XREF: H(4126).
4209	3-		XREF: H(4180).
4239.40	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
4249	4+		XREF: H(4220).
4326.5	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
4363.5	4+		XREF: H(4332).
4399	(3+,4+,5+)		XREF: H(4367).
4426			XREF: H(4402).
4476.5	(LE 4)		XREF: F(4468).
E(level)	J^π(level)	T_1/2(level)	Comments
4488	3-		XREF: H(4453).
4536	(3+,4+,5+)		XREF: H(4500).
4570			XREF: H(4530).
4611	(3-)		XREF: H(4570).
4659	(5-)		XREF: H(4615).
4784.1	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
4814.8	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
5122.48	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
5522.6	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
5749.9	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
5883.0	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
6021.1	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.
6065.2	(1 TO 4)		J^π(level): Possible β^- feeding from (2⁺,3⁺) (see ⁷⁶Ga β^- decay). Since the level scheme is not well established, the Jπ assignment is considered as tentative.

E(level)	E(gamma)	Comments
2692.40	1282.9	E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity
2692.40	2691.6	I(γ): this value is suspect since G₃(W.u.)=9.4 (p,p’); 11.7 (α,α’) suggests Iγ≈0.1. This γ ray was reported in ⁷⁶Ga β^- decay only, where it may have been contributed mainly by a sum line
3141.51	1230.2	E(γ): From (n,n’γ) only
3231.8	2668.8	E(γ): Placement suggested by the evaluator
5522.6	1282.9	E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity