List of levels for 166W

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

Assignment: ¹⁵⁶Dy(¹⁶O,6n), E(¹⁶O)=124.6 MeV excit (1975To05).

Q-value: Note: Current evaluation has used the following Q record -10.04×10³ SY11101 27 3326 20 4856 4 2003Au03

Q-value: ΔQ(β-)=90 (2003Au03).

E(level): From least-squares adjustment of Eγ, assigning ΔE_γ=1 keV to Eγ values to which the authors did not assign an uncertainty.

J^π(level): Based on measured transition multipolarities and band structure deduced in (HI,xnγ) studies, supported by cranked shell model calculations of 1992Si12 and systematics of band properties in neighboring nuclides.

E(γ): From (²⁸Si,4nγ), except as noted.

I(γ): Relative-photon intensity, normalized to 100 for the strongest γ deexciting each level; from (⁶³Cu,p2nγ), except as noted.

M(γ): Based on measured DCO ratios in (⁶³Cu,p2nγ), assigning Δπ=(no) for intraband transitions, except as noted.

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
252.0	2+		252.0 3	E2	0.1452	α=0.1452
675.7	4+		423.7 2	(E2)	0.0321	α=0.0321
1225.9	6+		550.2 2	(E2)	0.01661	α=0.01661
1864.8	8+		638.9 2	(E2)	0.01171	α=0.01171
1928.5	(7-)		341.0 5	(E2)	0.0584	α=0.0584
2337.3	(9-)		408.8 5	(E2)	0.0353	α=0.0353
2349.5	(8-)		329.3	(E2)	0.0646	α=0.0646
2551.6	10+		686.8 2	(E2)	0.00995	α=0.00995
2742.5	(11-)		405.2 5	(E2)	0.0362	α=0.0362
2946.6	(12-)		373.4	(E2)	0.0452	α=0.0452
3031.2	(12+)		479.6 2	(E2)	0.0233	α=0.0233
3173.0	(13-)		430.5 5	(E2)	0.0308	α=0.0308
3356.2	(14+)		325.0 2	(E2)	0.0671	α=0.0671
3474.3	(14-)		527.7	(E2)	0.0184	α=0.0184
3722.1	(15-)		549.1 5	(E2)	0.01669	α=0.01669
3821.3	(16+)		465.1 5	(E2)	0.0252	α=0.0252
4127.0	(16-)		652.7	(E2)	0.01115	α=0.01115
4378.1	(17-)		656.0 5	(E2)	0.01103	α=0.01103
4388.4	(18+)		567.1 5	(E2)	0.01545	α=0.01545
4870.7	(18-)		743.7	(E2)	0.00835	α=0.00835
5114.3	(19-)		736.2 5	(E2)	0.00854	α=0.00854
5729.1	(22+)		701.8 5	(E2)	0.00948	α=0.00948
6169	(22-)		589.7	(E2)	0.01409	α=0.01409
6492.4	(24+)		763.3 5	(E2)	0.00789	α=0.00789
7170.5	(25-)		674.2	(E2)	0.01037	α=0.01037
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
7312.7	(26+)		820.3 5	(E2)	0.00677	α=0.00677
8184.3	(28+)		871.6	(E2)	0.00596	α=0.00596

Q(β-)=-9.99×10³ keV 8	S(n)= 1.110×10⁴ keV 3	S(p)= 3330 keV 17	Q(α)= 4856 keV 4
Reference: 2012WA38

References:
A	¹⁴²Nd(²⁸Si,4nγ)	B	¹⁰⁶Pd(⁶³Cu,p2nγ)
C	¹⁷⁰Os α decay	D	¹⁶⁶Re ε decay

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	0+	19.2 s 6 % ε = 99.965 12 % α = 0.035 12	E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
252.0	2+		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
675.7	4+		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
1225.9	6+		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
1587.3	(5-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
1864.8	8+		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
1928.5	(7-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
2020.2	(6-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
2337.3	(9-)		XREF: α(2333.4). E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
2349.5	(8-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
2551.6	10+		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
2573.2	(10-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
2742.5	(11-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
2946.6	(12-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
3031.2	(12+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
3173.0	(13-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
3356.2	(14+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
3474.3	(14-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
3722.1	(15-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
3821.3	(16+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
4127.0	(16-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
4378.1	(17-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
4388.4	(18+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
4870.7	(18-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
5027.3	(20+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
E(level)	J^π(level)	T_1/2(level)	Comments
5114.3	(19-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
5579.5	(20-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
5729.1	(22+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
5853.6	(21-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
6169	(22-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
6492.4	(24+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
6496.3	(23-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
6811	(24-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
7170.5	(25-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
7312.7	(26+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
7520	(26-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
7917.0	(27-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
8184.3	(28+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
8290	(28-)		E(level): From (⁶³Cu,p2nγ); uncertainty unstated by authors. (ν 3/2[651])(ν 3/2[521]), α=-1/2 band (1992Si12).
8725	(29-)		E(level): (ν 3/2[651])(ν 3/2[521]), α=+1/2 band (1992Si12).
9106.9	(30+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).
10075.7	(32+)		E(level): K^π=0⁺ yrast band (1992Si12). J^π(level): α cascade of stretched Q intraband transitions exists between the J=18 and the J=0 band members; the 0⁺ g.s. is the band head, and an E2 353γ links the J=2 and 0 members. Definite Jπ values have, therefore, been assigned below the first band crossing (i.e., to J=0 through 10 band members).

E(level)	E(gamma)	Comments
252.0	252.0	M(γ): Q from γ(θ), not M2 from intensity balance in (²⁸Si,4nγ).. Transition is member of stretched E2 cascade to 0⁺ g.s.
675.7	423.7	M(γ): Transition is member of stretched E2 cascade to 0⁺ g.s.
1225.9	550.2	M(γ): Transition is member of stretched E2 cascade to 0⁺ g.s.
1864.8	638.9	E(γ): Multiply placed M(γ): stretched Q, based on DCO ratios for doublet dominated by this intraband transition.
2020.2	432.8	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
2337.3	472.7	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
2349.5	329.3	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
2349.5	421.1	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
2573.2	223.8	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
2573.2	235.7	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
2946.6	373.4	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
3474.3	527.7	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
3722.1	549.1	E(γ): 546.2 in (⁶³Cu, p2nγ).
4127.0	652.7	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
4388.4	567.1	E(γ): 568.0 in (⁶³Cu,p2nγ).
4870.7	743.7	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
5027.3	638.9	E(γ): Multiply placed
5579.5	708.8	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
5729.1	701.8	E(γ): 701.1 in (⁶³Cu,p2nγ).
5853.6	739.3	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
6169	589.7	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
6492.4	763.3	E(γ): 765.1 in (⁶³Cu,p2nγ).
6496.3	642.6	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
6811	641.7	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
7170.5	674.2	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
E(level)	E(gamma)	Comments
7520	708.8	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
7917.0	746.5	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
8184.3	871.6	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
8290	770.5	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
8725	808.2	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
9106.9	922.6	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.
10075.7	968.8	E(γ): From (⁶³Cu,p2nγ); uncertainty unstated by authors.

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	0+	19.2 s 6 % ε = 99.965 12 % α = 0.035 12
252.0 3	A B D	2+		252.0 3	100	E2	0.0	0+
675.7 4	A B D	4+		423.7 2	100	(E2)	252.0	2+
1225.9 4	A B D	6+		550.2 2	100	(E2)	675.7	4+
1587.3 6	A B	(5-)		911.5 5	100	D	675.7	4+
1864.8 5	A B	8+		638.9 2	100	(E2)	1225.9	6+
1928.5 6	A B	(7-)		341.0 5 702.7 5	42 3 100 8	(E2) D	1587.3 1225.9	(5-) 6+
2020.2 10	B	(6-)		432.8	100		1587.3	(5-)
2337.3 7	A B	(9-)		408.8 5 472.7	100 5 26.6 22	(E2) D	1928.5 1864.8	(7-) 8+
2349.5 9	B	(8-)		329.3 421.1	100 21 91 15	(E2)	2020.2 1928.5	(6-) (7-)
2551.6 5	A B	10+		686.8 2	100	(E2)	1864.8	8+
2573.2 10	B	(10-)		223.8 235.7	100 10 74 7	D	2349.5 2337.3	(8-) (9-)
2742.5 9	A B	(11-)		405.2 5		(E2)	2337.3	(9-)
2946.6 14	B	(12-)		373.4	100	(E2)	2573.2	(10-)
3031.2 6	A B	(12+)		479.6 2	100	(E2)	2551.6	10+
3173.0 10	A B	(13-)		430.5 5	100	(E2)	2742.5	(11-)
3356.2 6	A B	(14+)		325.0 2	100	(E2)	3031.2	(12+)
3474.3 18	B	(14-)		527.7	100	(E2)	2946.6	(12-)
3722.1 11	A B	(15-)		549.1 5	100	(E2)	3173.0	(13-)
3821.3 8	A B	(16+)		465.1 5	100	(E2)	3356.2	(14+)
4127.0 20	B	(16-)		652.7	100	(E2)	3474.3	(14-)
4378.1 12	A B	(17-)		656.0 5	100	(E2)	3722.1	(15-)
4388.4 9	A B	(18+)		567.1 5	100	(E2)	3821.3	(16+)
4870.7 23	B	(18-)		743.7	100	(E2)	4127.0	(16-)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
5027.3 11	A B	(20+)		638.9 5	100		4388.4	(18+)
5114.3 13	A B	(19-)		736.2 5	100	(E2)	4378.1	(17-)
5579.5 25	B	(20-)		708.8	100		4870.7	(18-)
5729.1 12	A B	(22+)		701.8 5	100	(E2)	5027.3	(20+)
5853.6 17	B	(21-)		739.3	100		5114.3	(19-)
6169 3	B	(22-)		589.7	100	(E2)	5579.5	(20-)
6492.4 13	A B	(24+)		763.3 5	100	(E2)	5729.1	(22+)
6496.3 20	B	(23-)		642.6	100		5853.6	(21-)
6811 3 ?	B	(24-)		641.7?	100		6169	(22-)
7170.5 22 ?	B	(25-)		674.2?	100	(E2)	6496.3	(23-)
7312.7 14	A B	(26+)		820.3 5	100	(E2)	6492.4	(24+)
7520 3 ?	B	(26-)		708.8?	100		6811	(24-)
7917.0 24 ?	B	(27-)		746.5?	100		7170.5	(25-)
8184.3 17	B	(28+)		871.6	100	(E2)	7312.7	(26+)
8290 4 ?	B	(28-)		770.5?	100		7520	(26-)
8725 3 ?	B	(29-)		808.2?	100		7917.0	(27-)
9106.9 20	B	(30+)		922.6	100		8184.3	(28+)
10075.7 22 ?	B	(32+)		968.8?	100		9106.9	(30+)