List of levels for 140TB

ADOPTED LEVELS, GAMMAS for ¹⁴⁰Tb

Author: N. Nica | Citation: Nucl. Data Sheets 154, 1 (2018) | Cutoff date: 20-Nov-2018

Full ENSDF file | Adopted Levels (PDF version)

Q(β-)=-7650 keV SY	S(n)= 10420 keV SY	S(p)= 140 keV SY	Q(α)= 3340 keV SY
Reference: 2017WA10

References:
A	⁹²Mo(⁵⁴Fe,APNG)

Observed ¹⁴⁰Tb delayed proton emission with εp/ε=0.0026 13 (1991Fi03), E(p)=2200-6600 (E(p)(av)=4.2 MeV) (1986Wi15), in coincidence with 323γ (from 15/2- to 11/2-) in ¹³⁹Eu (2003Xu04)

Q-value: Uncertainties based on syst are: ΔQ(β^-)=900, ΔS(n)=850, ΔS(p)=820, ΔQ(α)=820 (2017Wa10)

Q-value: Q(εp)=7630 800 (2017Wa10)

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
0.0	A	(7+)	2.29 s 15 % ε = 100 % εp = 0.26 13
X	A	(8+)
118.7+X 3	A	(9+)		118.7	100	D	X	(8+)
292.4+X 4	A	(10+)		173.7	100	D	118.7+X	(9+)
551.9+X 4	A	(11+)		259.5 433.2	100 15	D	292.4+X 118.7+X	(10+) (9+)
805.4+X 5	A	(12+)		253.5 513.0	100 26	D	551.9+X 292.4+X	(11+) (10+)
1137.2+X 5	A	(13+)		331.8 585.3	100 63	D Q	805.4+X 551.9+X	(12+) (11+)
1454.7+X 5	A	(14+)		317.6 649.3	100 55	D	1137.2+X 805.4+X	(13+) (12+)
1837.1+X 5	A	(15+)		382.6 699.8	100 43		1454.7+X 1137.2+X	(14+) (13+)
2217.9+X 5	A	(16+)		380.8 763.2	100 66		1837.1+X 1454.7+X	(15+) (14+)
2623.0+X 6	A	(17+)		405.0 785.9			2217.9+X 1837.1+X	(16+) (15+)
3042.9+X 6	A	(18+)		825.0	100		2217.9+X	(16+)

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - πh_11/2νh_11/2, α=1. Inverted signature as in
118.7+X 3	(9+)
551.9+X 4	(11+)
1137.2+X 5	(13+)		331.8 585.3	100 63	D Q	805.4+X 551.9+X	(12+) (11+)
1837.1+X 5	(15+)		382.6 699.8	100 43		1454.7+X 1137.2+X	(14+) (13+)
2623.0+X 6	(17+)		405.0 785.9			2217.9+X 1837.1+X	(16+) (15+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - πh_11/2νh_11/2, α=0. Inverted signature as in
X	(8+)
292.4+X 4	(10+)
805.4+X 5	(12+)		253.5 513.0	100 26	D	551.9+X 292.4+X	(11+) (10+)
1454.7+X 5	(14+)		317.6 649.3	100 55	D	1137.2+X 805.4+X	(13+) (12+)
2217.9+X 5	(16+)		380.8 763.2	100 66		1837.1+X 1454.7+X	(15+) (14+)
3042.9+X 6	(18+)		825.0	100		2217.9+X	(16+)

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	(7+)	2.29 s 15 % ε = 100 % εp = 0.26 13	E(level): The lowest-observed state in ¹⁴⁰Tb has Jπ=(7⁺) (2003Xu04, 2000Xu08) and T_1/2=2.4 s 2 (1991Fi03). 1991Fi03 consider it either g.s. or isomer in less than 50 keV from g.s. and state that based on systematics of heavier odd-odd Tb isotopes one should expect 1⁺ g.s. and T_1/2 considerably shorter than 1 s, which is not confirmed by newer data shown here. With this caveat we adopt this state as g.s.
X	(8+)		E(level): πh_11/2νh_11/2, α=0. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.
118.7+X	(9+)		E(level): πh_11/2νh_11/2, α=1. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.
292.4+X	(10+)		E(level): πh_11/2νh_11/2, α=0. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here. E(level): πh_11/2νh_{11/2, α=0. Inverted signature as in.}
551.9+X	(11+)		E(level): πh_11/2νh_11/2, α=1. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.
805.4+X	(12+)		E(level): πh_11/2νh_11/2, α=0. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.
1137.2+X	(13+)		E(level): πh_11/2νh_11/2, α=1. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.
1454.7+X	(14+)		E(level): πh_11/2νh_11/2, α=0. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.
1837.1+X	(15+)		E(level): πh_11/2νh_11/2, α=1. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.
2217.9+X	(16+)		E(level): πh_11/2νh_11/2, α=0. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.
2623.0+X	(17+)		E(level): πh_11/2νh_{11/2, α=1. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here. E(level): πh_11/2νh_11/2, α=1. Inverted signature as in.}
3042.9+X	(18+)		E(level): πh_11/2νh_11/2, α=0. Inverted signature as in. J^π(level): Modified values based on ⁹²Mo(⁵⁴Fe,αpnγ) (2000Ri13). 2000Ri13 find band structure based on Jπ=(7⁺) state from systematics of less heavy isotones and comment that based on 1996Li13 all spins may differ by one unit, which can not be confirmed or overruled by 2000Ri13. The newer ENSDF files (Adopted Levels, Gammas) for ¹³²La (2005), ¹³⁶Pm (2002) and ¹³⁸Eu (2003) confirm a shift of +1 in spin, and consequently the signature inversion, for the band of 2000Ri13, which were adopted here.