List of levels for 165TA

ADOPTED LEVELS, GAMMAS for ¹⁶⁵Ta

Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 194, 460 (2024) | Cutoff date: 31-Oct-2022

Full ENSDF file | Adopted Levels (PDF version)

Q(β-)=-6987 keV 29	S(n)= 10640 keV 30	S(p)= 1318 keV 20	Q(α)= 4290 keV 30
Reference: 2021WA16

References:
A	¹⁶⁵W ε decay (5.1 S)	B	¹⁶⁹Re α decay (8.1 S)
C	¹⁶⁹Re α decay (15.1 S)	D	¹⁴²Nd(²⁷Al,4nγ),

¹⁶⁵Ta isotope produced and identified by 1982Li17 in reaction Lu(³He,xn) at 280 MeV; and by 1982Br15 in ¹⁵¹Eu(²⁰Ne,6n) at 154-156 MeV. ¹⁶⁵Ta is also the daughter product of ¹⁶⁹Re α decay (1978Ca11,1982De11,1984Sc06,1992Me10)

Q-value: Q(ε)=5790 30, Q(εp)=1510 30, S(2n)=19460 40, S(2p)=5630 30 (2021Wa16)

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
0.0	C D	(9/2-)	31.0 s 15 % ε = 100
25 18 ?	B
70.60 24	D	(11/2-)		70.6 3	100		0.0	(9/2-)
200 18 ?	B
297.30 24	D	(13/2-)		226.7 3 297.3 3	100 14 12 5	M1	70.60 0.0	(11/2-) (9/2-)
470.1 3	D	(15/2-)		172.8 3 399.5 3	70 13 100 20	M1 (E2)	297.30 70.60	(13/2-) (11/2-)
793.9 3	D	(17/2-)		323.8 3 496.6 3	100 24 58 6	M1 E2	470.1 297.30	(15/2-) (13/2-)
997.9 4	D	(19/2-)		204.0 3 527.8 3	23 3 100 3	D E2	793.9 470.1	(17/2-) (15/2-)
1399.2 4	D	(21/2-)		401.3 3 605.3 3	100 22 90 21	(M1)	997.9 793.9	(19/2-) (17/2-)
1618.4 4	D	(23/2-)		219.2 3 620.5 3	11.2 11 100 3	D E2	1399.2 997.9	(21/2-) (19/2-)
2071.0 5	D	(25/2-)		452.5 3 671.7 3	100 14 88 28	M1	1618.4 1399.2	(23/2-) (21/2-)
2294.8 5	D	(27/2-)		224.0 3 676.5 3	15.7 14 100 13	E2	2071.0 1618.4	(25/2-) (23/2-)
2655.7 5	D	(29/2-)		361.0 3 584.5 3	100 24 88 12	M1 E2	2294.8 2071.0	(27/2-) (25/2-)
2790.5 5	D	(31/2-)		134.5 3 496.0 3	72 6 100 9	D E2	2655.7 2294.8	(29/2-) (27/2-)
2974.3 6	D	(33/2-)		183.8 3 319 1 ?	100 8 ≤4	M1	2790.5 2655.7	(31/2-) (29/2-)
3174.5 6	D	(35/2-)		200.2 3 384.0 3	100 7 29 5	M1	2974.3 2790.5	(33/2-) (31/2-)
3412.8 6	D	(37/2-)		238.4 3 438.4 3	100 3 55 11	M1 (E2)	3174.5 2974.3	(35/2-) (33/2-)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
3683.0 6	D	(39/2-)		270.3 3 508.4 3	100 7 62 22	M1 (E2)	3412.8 3174.5	(37/2-) (35/2-)
3969.8 6	D	(41/2-)		286.7 3 557.0 3	100 40 82 11	M1 E2	3683.0 3412.8	(39/2-) (37/2-)
4291.7 6	D	(43/2-)		322.1 3 608.8 3	100.0 21 72 15	M1	3969.8 3683.0	(41/2-) (39/2-)
4622.2 7	D	(45/2-)		330.3 3 652.3 3	100 6 100 14	M1 E2	4291.7 3969.8	(43/2-) (41/2-)
4983.1 7	D	(47/2-)		360.5 3 691.8 3	100 21 53 21	M1 (E2)	4622.2 4291.7	(45/2-) (43/2-)
5355.5 7	D	(49/2-)		372.4 3 733.2 3	100 10 65 15	Q	4983.1 4622.2	(47/2-) (45/2-)
5752.5 7	D	(51/2-)		769.4 3	100		4983.1	(47/2-)
6168.2 8	D	(53/2-)		812.7 3	100		5355.5	(49/2-)

E(level): From a least-squares fit to Eγ data

J^π(level): As proposed by 2001Ro01 in ¹⁴²Nd(²⁷Al,4nγ), based on γγ(θ)(DCO) data and band assignments

M(γ): From γγ(θ)(DCO) and/or γ(lin pol) in ¹⁴²Nd(²⁷Al,4nγ). For mult=M1 (ΔJ=1) transitions, small E2 admixture cannot be ruled out. The mult=d indicates ΔJ=1 transition

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - π9/2[514], α=+1/2.
0.0	(9/2-)	31.0 s 15 % ε = 100
297.30 24	(13/2-)
793.9 3	(17/2-)		323.8 3 496.6 3	100 24 58 6	M1 E2	470.1 297.30	(15/2-) (13/2-)
1399.2 4	(21/2-)
2071.0 5	(25/2-)		452.5 3 671.7 3	100 14 88 28	M1	1618.4 1399.2	(23/2-) (21/2-)
2655.7 5	(29/2-)		361.0 3 584.5 3	100 24 88 12	M1 E2	2294.8 2071.0	(27/2-) (25/2-)
2974.3 6	(33/2-)		183.8 3 319 1 ?	100 8 ≤4	M1	2790.5 2655.7	(31/2-) (29/2-)
3412.8 6	(37/2-)		238.4 3 438.4 3	100 3 55 11	M1 (E2)	3174.5 2974.3	(35/2-) (33/2-)
3969.8 6	(41/2-)		286.7 3 557.0 3	100 40 82 11	M1 E2	3683.0 3412.8	(39/2-) (37/2-)
4622.2 7	(45/2-)		330.3 3 652.3 3	100 6 100 14	M1 E2	4291.7 3969.8	(43/2-) (41/2-)
5355.5 7	(49/2-)		372.4 3 733.2 3	100 10 65 15	Q	4983.1 4622.2	(47/2-) (45/2-)
6168.2 8	(53/2-)		812.7 3	100		5355.5	(49/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - π9/2[514], α=-1/2.
70.60 24	(11/2-)
470.1 3	(15/2-)
997.9 4	(19/2-)		204.0 3 527.8 3	23 3 100 3	D E2	793.9 470.1	(17/2-) (15/2-)
1618.4 4	(23/2-)
2294.8 5	(27/2-)		224.0 3 676.5 3	15.7 14 100 13	E2	2071.0 1618.4	(25/2-) (23/2-)
2790.5 5	(31/2-)		134.5 3 496.0 3	72 6 100 9	D E2	2655.7 2294.8	(29/2-) (27/2-)
3174.5 6	(35/2-)		200.2 3 384.0 3	100 7 29 5	M1	2974.3 2790.5	(33/2-) (31/2-)
3683.0 6	(39/2-)		270.3 3 508.4 3	100 7 62 22	M1 (E2)	3412.8 3174.5	(37/2-) (35/2-)
4291.7 6	(43/2-)		322.1 3 608.8 3	100.0 21 72 15	M1	3969.8 3683.0	(41/2-) (39/2-)
4983.1 7	(47/2-)		360.5 3 691.8 3	100 21 53 21	M1 (E2)	4622.2 4291.7	(45/2-) (43/2-)
5752.5 7	(51/2-)		769.4 3	100		4983.1	(47/2-)

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	(9/2-)	31.0 s 15 % ε = 100	E(level): π9/2[514], α=+1/2.
25			E(level): Tentative level from ¹⁶⁹Re α decay (8.1 s).
70.60	(11/2-)		E(level): π9/2[514], α=-1/2.
200			E(level): Tentative level from ¹⁶⁹Re α decay (8.1 s).
297.30	(13/2-)		E(level): π9/2[514], α=+1/2.
470.1	(15/2-)		E(level): π9/2[514], α=-1/2.
793.9	(17/2-)		E(level): π9/2[514], α=+1/2.
997.9	(19/2-)		E(level): π9/2[514], α=-1/2.
1399.2	(21/2-)		E(level): π9/2[514], α=+1/2.
1618.4	(23/2-)		E(level): π9/2[514], α=-1/2.
2071.0	(25/2-)		E(level): π9/2[514], α=+1/2.
2294.8	(27/2-)		E(level): π9/2[514], α=-1/2.
2655.7	(29/2-)		E(level): π9/2[514], α=+1/2.
2790.5	(31/2-)		E(level): π9/2[514], α=-1/2.
2974.3	(33/2-)		E(level): π9/2[514], α=+1/2.
3174.5	(35/2-)		E(level): π9/2[514], α=-1/2.
3412.8	(37/2-)		E(level): π9/2[514], α=+1/2.
3683.0	(39/2-)		E(level): π9/2[514], α=-1/2.
3969.8	(41/2-)		E(level): π9/2[514], α=+1/2.
4291.7	(43/2-)		E(level): π9/2[514], α=-1/2.
4622.2	(45/2-)		E(level): π9/2[514], α=+1/2.
4983.1	(47/2-)		E(level): π9/2[514], α=-1/2.
5355.5	(49/2-)		E(level): π9/2[514], α=+1/2.
5752.5	(51/2-)		E(level): π9/2[514], α=-1/2.
6168.2	(53/2-)		E(level): π9/2[514], α=+1/2.