List of levels for 166DY

ADOPTED LEVELS, GAMMAS for ¹⁶⁶Dy

Author: Coral M. Baglin | Citation: Nucl. Data Sheets 109, 1103 (2008) | Cutoff date: 1-Mar-2008

Full ENSDF file | Adopted Levels (PDF version)

Q(β-)=487.1 keV 10	S(n)= 7043.5 keV 4	S(p)= 9.31×10³ keV SY	Q(α)= -729 keV 4
Reference: 2012WA38

References:
A	¹⁶⁵Dy(n,γ) E=THERMAL	B	¹⁶⁴Dy(t,p)
C	¹¹⁸Sn(¹⁶⁴Dy,116SNG)	D	¹⁶⁶Tb β^- decay

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
0	A B C D	0+	81.6 h 1 % β^- = 100
76.587 1	A B C D	2+		76.587 1	100	E2	0	0+
253.5278 14	A B C D	4+		176.941 1	100	E2	76.587	2+
526.9670 25	A C	6+		273.439 2	100	E2	253.5278	4+
857.163 4	A B D	(2)+		780.571 6 857.156 11	88 17 100 22	M1(+E2) [E2]	76.587 0	2+ 0+
892.0 10	C	8+		365			526.9670	6+
928.729 4	A D	(3)+		675.218 9 852.128 8	13.7 27 100 19	E2(+M1) E2(+M1)	253.5278 76.587	4+ 2+
1023.434 4	A B	(4)+		769.907 6 946.850 15	100 21 65 13	M1+E2 E2	253.5278 76.587	4+ 2+
1029.903 4	A D	(2-)		101.175 1 172.738 1	4.4 8 100 10	[E1] [E1]	928.729 857.163	(3)+ (2)+
1095.210 4	A B D	(3-)		166.479 3 238.062 4	73 8 100 10	[E1] [E1]	928.729 857.163	(3)+ (2)+
1141.266 13	A	(5+)		614.302 26 887.734 15	9.6 17 100 21		526.9670 253.5278	6+ 4+
1149	B	0+
1180.854 4	A	(4-)		85.644 2 157.421 3 252.124 3	1.6 8 12.3 8 100 10		1095.210 1023.434 928.729	(3-) (4)+ (3)+
1189.387 4	A	(2+,3,4-)		94.178 1 159.492 4 165.95 1 260.652 2	2.8 18 5.5 9 17.4 18 100 9		1095.210 1029.903 1023.434 928.729	(3-) (2-) (4)+ (3)+
1208	B	(2+)
1274	B
1334	B
1341.0 15	C	10+		449	100		892.0	8+
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
1351	B
1515	B
1556	B
1616	B
1645	B
1674	B
1770	B
1864	B
1868.0 18	C	12+		527	100		1341.0	10+
1891	B
2029	B
2048	B
2069.7 3	D	(LE3-)		1039.8 3	100		1029.903	(2-)
2120	B
2183	B
2252	B
2311	B
2383	B
2467.0 20	C	14+		599	100		1868.0	12+
3119.0 22 ?	C	(16+)		652?	100		2467.0	14+

E(level): From least-squares fit to Eγ, assigning 1 keV uncertainty to Eγ data for which the authors did not state an uncertainty, except for levels observed only in (t,p) reaction.

J^π(level): Based on the systematics for band structures of the even Dy isotopes, unless otherwise noted.

E(γ): From ¹⁶⁵Dy(n,γ), E=thermal, except as noted.

I(γ): Relative photon intensity normalized to 100 for strongest γ deexciting each level; from ¹⁶⁵Dy(n,γ) E=thermal, except as noted. Branching from β^- decay is in good agreement with that from (n,γ).

M(γ): From subshell ratios and/or α(K)exp in (n,γ) E=thermal.

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - K^π=0⁺ band (1998Wu04).
76.587 1	2+
253.5278 14	4+		176.941 1	100	E2	76.587	2+
526.9670 25	6+		273.439 2	100	E2	253.5278	4+
892.0 10	8+		365			526.9670	6+
1341.0 15	10+		449	100		892.0	8+
1868.0 18	12+		527	100		1341.0	10+
2467.0 20	14+		599	100		1868.0	12+
3119.0 22	(16+)		652?	100		2467.0	14+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - K^π=2⁺ γ-vibrational band (1988Ka44).
857.163 4	(2)+
928.729 4	(3)+		675.218 9 852.128 8	13.7 27 100 19	E2(+M1) E2(+M1)	253.5278 76.587	4+ 2+
1023.434 4	(4)+		769.907 6 946.850 15	100 21 65 13	M1+E2 E2	253.5278 76.587	4+ 2+
1141.266 13	(5+)		614.302 26 887.734 15	9.6 17 100 21		526.9670 253.5278	6+ 4+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 3 - K^π=(2-) band.
1029.903 4	(2-)
1095.210 4	(3-)		166.479 3 238.062 4	73 8 100 10	[E1] [E1]	928.729 857.163	(3)+ (2)+
1180.854 4	(4-)		85.644 2 157.421 3 252.124 3	1.6 8 12.3 8 100 10		1095.210 1023.434 928.729	(3-) (4)+ (3)+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 4 - K^π=0⁺ band (1988Bu08).
1149	0+
1208	(2+)

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
76.587	2+		76.587 1	E2	7.51	α=7.51
253.5278	4+		176.941 1	E2	0.357	α=0.357
526.9670	6+		273.439 2	E2	0.0859	α=0.0859
857.163	(2)+		780.571 6	M1(+E2)	0.0074	α=0.0074 23
857.163	(2)+		857.156 11	[E2]	0.00422	α=0.00422
928.729	(3)+		675.218 9	E2(+M1)	0.011	α=0.011 4
928.729	(3)+		852.128 8	E2(+M1)	0.0061	α=0.0061 18
1023.434	(4)+		769.907 6	M1+E2	0.0077	α=0.0077 24
1023.434	(4)+		946.850 15	E2	0.00341	α=0.00341
1029.903	(2-)		101.175 1	[E1]	0.299	α=0.299
1029.903	(2-)		172.738 1	[E1]	0.0716	α=0.0716
1095.210	(3-)		166.479 3	[E1]	0.0789	α=0.0789
1095.210	(3-)		238.062 4	[E1]	0.0309	α=0.0309

E(level)	J^π(level)	T_1/2(level)	Comments
76.587	2+		E(level): K^π=0⁺ band (1998Wu04). J^π(level): Established Jπ for the g.s. and 76 level combined with known E2 multipolarity for the J=4 to J=2 177-keV transition and a regular sequence of level energies enable the assignment of definite Jπ to g.s. band members with J\|<14.
253.5278	4+		E(level): K^π=0⁺ band (1998Wu04). J^π(level): Established Jπ for the g.s. and 76 level combined with known E2 multipolarity for the J=4 to J=2 177-keV transition and a regular sequence of level energies enable the assignment of definite Jπ to g.s. band members with J\|<14.
526.9670	6+		E(level): K^π=0⁺ band (1998Wu04). J^π(level): Established Jπ for the g.s. and 76 level combined with known E2 multipolarity for the J=4 to J=2 177-keV transition and a regular sequence of level energies enable the assignment of definite Jπ to g.s. band members with J\|<14.
857.163	(2)+		E(level): K^π=2⁺ γ-vibrational band (1988Ka44).
892.0	8+		E(level): K^π=0⁺ band (1998Wu04). J^π(level): Established Jπ for the g.s. and 76 level combined with known E2 multipolarity for the J=4 to J=2 177-keV transition and a regular sequence of level energies enable the assignment of definite Jπ to g.s. band members with J\|<14.
928.729	(3)+		E(level): K^π=2⁺ γ-vibrational band (1988Ka44).
1023.434	(4)+		E(level): K^π=2⁺ γ-vibrational band (1988Ka44).
1029.903	(2-)		E(level): K^π=(2-) band.
1095.210	(3-)		E(level): K^π=(2-) band.
1141.266	(5+)		E(level): K^π=2⁺ γ-vibrational band (1988Ka44).
1149	0+		E(level): K^π=0⁺ band (1988Bu08).
1180.854	(4-)		E(level): K^π=(2-) band.
1208	(2+)		E(level): K^π=0⁺ band (1988Bu08).
1341.0	10+		E(level): K^π=0⁺ band (1998Wu04). J^π(level): Established Jπ for the g.s. and 76 level combined with known E2 multipolarity for the J=4 to J=2 177-keV transition and a regular sequence of level energies enable the assignment of definite Jπ to g.s. band members with J\|<14.
1868.0	12+		E(level): K^π=0⁺ band (1998Wu04). J^π(level): Established Jπ for the g.s. and 76 level combined with known E2 multipolarity for the J=4 to J=2 177-keV transition and a regular sequence of level energies enable the assignment of definite Jπ to g.s. band members with J\|<14.
2467.0	14+		E(level): K^π=0⁺ band (1998Wu04). J^π(level): Established Jπ for the g.s. and 76 level combined with known E2 multipolarity for the J=4 to J=2 177-keV transition and a regular sequence of level energies enable the assignment of definite Jπ to g.s. band members with J\|<14.
3119.0	(16+)		E(level): K^π=0⁺ band (1998Wu04). J^π(level): Established Jπ for the g.s. and 76 level combined with known E2 multipolarity for the J=4 to J=2 177-keV transition and a regular sequence of level energies enable the assignment of definite Jπ to g.s. band members with J\|<14.

E(level)	E(gamma)	Comments
892.0	365	E(γ): From ¹¹⁸Sn(¹⁶⁴Dy,¹¹⁶Snγ); uncertainty unstated by authors.
1029.903	101.175	I(γ): from (n,γ) E=thermal. Other I(101γ):I(173γ)=13 4:100 13 in β^- decay.
1341.0	449	E(γ): From ¹¹⁸Sn(¹⁶⁴Dy,¹¹⁶Snγ); uncertainty unstated by authors.
1868.0	527	E(γ): From ¹¹⁸Sn(¹⁶⁴Dy,¹¹⁶Snγ); uncertainty unstated by authors.
2069.7	1039.8	E(γ): from β^- decay.
2467.0	599	E(γ): From ¹¹⁸Sn(¹⁶⁴Dy,¹¹⁶Snγ); uncertainty unstated by authors.
3119.0	652	E(γ): From ¹¹⁸Sn(¹⁶⁴Dy,¹¹⁶Snγ); uncertainty unstated by authors.