List of levels for 216FR

Author: S. -c. Wu | Citation: Nucl. Data Sheets 108, 1057 (2007) | Cutoff date: 1-Mar-2007

Levels: Calculated n-p interaction energy (1990Mo11)

Gammas: The data for γ’s from levels with known E(level) are from ²²⁰Ac α decay; the data for γ’s from bands built on the (9-) level are from ²⁰⁸Pb(¹¹B,3nγ)

Q-value: Note: Current evaluation has used the following Q record -312 17 5411 16 3141 16 9175 12 2003Au03

E(level): From least squares fit to Eγ

J^π(level): Arguments for Jπ assignment for levels seen in α decay are given. For additional Jπ assignments based on proposed configurations, see ²²⁰Ac α decay data set. The Jπ for levels seen in (¹¹B,3nγ) reaction are based on E1 and E2 character of deexciting transitions, band structure, unless otherwise noted. Although the relative J and π for these levels are well established, Jπ=(9-) for the bandhead is based on syst.

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
133.3	(3-)	71 ns 5 % α > 50	133.3 1	E2	2.65	B(E2)(W.u.)=0.67 5, α=2.65
141.6	(0-,1-,2-)		141.6 2	M1	5.32	α=5.32
191.2	(5-)		57.9 1	E2	118.3	α=118.3 20
226.1	(3-,4,5-)		34.9 3	(M1)	61.5	α=61.5 18
226.1	(3-,4,5-)		92.8 1	M1	3.50	α=3.50
344.2			118.2 2	(M1)	8.90	α=8.90
409.3			160.0 1	M1	3.76	α=3.76
493.4			243.7 2	M1	1.156	α=1.156
493.4			267.8 3	M1	0.890	α=0.890
539.4			312.9 4	(M1)	0.580	α=0.580
550.9			296.4 3	M1	0.673	α=0.673
568.8			342.7 3	M1	0.452	α=0.452
527.70+X	(11-)		527.7 2	E2	0.0325	α=0.0325
762.6+X	(12+)		235.0 2	E1	0.0601	α=0.0601
969.4+X	(13-)		206.7 2	E1	0.0815	α=0.0815
969.4+X	(13-)		441.6 2	E2	0.0499	α=0.0499
1261.1+X	(14+)		291.5 2	E1	0.0365	α=0.0365
1261.1+X	(14+)		498.6 2	E2	0.0371	α=0.0371
1383.2+X	(15-)		121.9 2	E1	0.293	α=0.293
1383.2+X	(15-)		414.0 2	E2	0.0588	α=0.0588
1659.9+X	(16+)		276.8 2	E1	0.0411	α=0.0411
1659.9+X	(16+)		398.9 2	E2	0.0648	α=0.0648
1834.8+X	(17-)		175.2 2	E1	0.1212	α=0.1212
1834.8+X	(17-)		451.3 2	[E2]	0.0473	α=0.0473
1973.0+X	(18+)		138.2 2	E1	0.216	α=0.216
1973.0+X	(18+)		313.0 2	E2	0.1276	α=0.1276

Q(β-)=-320 keV 10	S(n)= 5418 keV 8	S(p)= 3149 keV 9	Q(α)= 9174 keV 4
Reference: 2012WA38

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
0	A	(1-)	0.70 µs 2 % α = 100 % ε < 2×10^-7 SY
133.3 1	A	(3-)	71 ns 5 % α > 50	133.3 1	100	E2	0	(1-)
141.6 2	A	(0-,1-,2-)		141.6 2	100	M1	0	(1-)
191.2 2	A	(5-)		57.9 1	100	E2	133.3	(3-)
212.0 2	A			78.6 2	100		133.3	(3-)
226.1 2	A	(3-,4,5-)		34.9 3 92.8 1	≈5 100 14	(M1) M1	191.2 133.3	(5-) (3-)
247.8 4 ?	A			247.8 4 ?	100		0	(1-)
249.4 2	A			37.4 3	100		212.0
254.4 2	A	(1-,2,3-)		42.5 2 ? 121.0 2 254.4 5	≈38 100 18 68 21		212.0 133.3 0	(3-) (1-)
290.4 2	A			64.3 1	100		226.1	(3-,4,5-)
344.2 2	A			53.6 2 94.8 1 118.2 2 153.1 2	≈12 100 16 54 14 73 14	(M1)	290.4 249.4 226.1 191.2	(3-,4,5-) (5-)
349.3 3	A			137.3 2	100		212.0
409.3 2	A			160.0 1	100	M1	249.4
493.4 2	A			149.0 3 203.6 5 243.7 2 267.8 3	53 16 ≈17 100 22 100 22	M1 M1	344.2 290.4 249.4 226.1	(3-,4,5-)
532.1 2	A			123.3 3 182.8 3 187.8 2 305.6 4	38 10 38 11 100 21 69 28		409.3 349.3 344.2 226.1	(3-,4,5-)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
539.4 4	A			130.4 4 312.9 4	≈29 100 14	(M1)	409.3 226.1	(3-,4,5-)
550.9 2	A			206.7 2 296.4 3 301.4 3	60 15 100 25 65 20	M1	344.2 254.4 249.4	(1-,2,3-)
568.8 4	A			342.7 3 378.0 10	100 14 ≈6	M1	226.1 191.2	(3-,4,5-) (5-)
581.5 3	A	(3-,4,5-)		172.2 3 390.2 5 448.4 10	76 20 100 38 ≈30		409.3 191.2 133.3	(5-) (3-)
X	B	(9-)
527.70+X 20	B	(11-)		527.7 2	100	E2	X	(9-)
762.6+X 3	B	(12+)		235.0 2	100	E1	527.70+X	(11-)
969.4+X 3	B	(13-)		206.7 2 441.6 2	12.2 11 100 11	E1 E2	762.6+X 527.70+X	(12+) (11-)
1261.1+X 3	B	(14+)		291.5 2 498.6 2	26.3 17 100 12	E1 E2	969.4+X 762.6+X	(13-) (12+)
1383.2+X 3	B	(15-)		121.9 2 414.0 2	4.9 9 100 9	E1 E2	1261.1+X 969.4+X	(14+) (13-)
1659.9+X 4	B	(16+)		276.8 2 398.9 2	100 10 38 4	E1 E2	1383.2+X 1261.1+X	(15-) (14+)
1834.8+X 4	B	(17-)		175.2 2 451.3 2	95 10 100 15	E1 [E2]	1659.9+X 1383.2+X	(16+) (15-)
1973.0+X 4	B	(18+)		138.2 2 313.0 2	23 7 100 11	E1 E2	1834.8+X 1659.9+X	(17-) (16+)

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - π=- band
X	(9-)
527.70+X 20	(11-)		527.7 2	100	E2	X	(9-)
969.4+X 3	(13-)		206.7 2 441.6 2	12.2 11 100 11	E1 E2	762.6+X 527.70+X	(12+) (11-)
1383.2+X 3	(15-)		121.9 2 414.0 2	4.9 9 100 9	E1 E2	1261.1+X 969.4+X	(14+) (13-)
1834.8+X 4	(17-)		175.2 2 451.3 2	95 10 100 15	E1 [E2]	1659.9+X 1383.2+X	(16+) (15-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - π=+ band
762.6+X 3	(12+)
1261.1+X 3	(14+)		291.5 2 498.6 2	26.3 17 100 12	E1 E2	969.4+X 762.6+X	(13-) (12+)
1659.9+X 4	(16+)		276.8 2 398.9 2	100 10 38 4	E1 E2	1383.2+X 1261.1+X	(15-) (14+)
1973.0+X 4	(18+)		138.2 2 313.0 2	23 7 100 11	E1 E2	1834.8+X 1659.9+X	(17-) (16+)

E(level)	J^π(level)	T_1/2(level)	Comments
X	(9-)		E(level): π=- band.
527.70+X	(11-)		E(level): π=- band.
762.6+X	(12+)		E(level): π=+ band.
969.4+X	(13-)		E(level): π=- band.
1261.1+X	(14+)		E(level): π=+ band.
1383.2+X	(15-)		E(level): π=- band.
1659.9+X	(16+)		E(level): π=+ band.
1834.8+X	(17-)		E(level): π=- band.
1973.0+X	(18+)		E(level): π=+ band.