List of levels for 210RA

Author: M. Shamsuzzoha Basunia | Citation: Nucl. Data Sheets 121, 561 (2014) | Cutoff date: 31-Mar-2014

E(level): From least-squares fit to adopted γ-ray energies.

J^π(level): Spin and parity suggested in (³⁰Si,4nγ) - 2004Re04 from comparison with neighboring even-even Po, Rn, and Ra nuclides with 126 neutrons and γ-ray multipolarity.

M(γ): From 2004Re04 (³⁰Si,4nγ), suggested based on γ-ray intensities between two rings of the clover array. Quadrupole transitions favored in the backward ring (140|’) and dipole transitions in the side rings (90|’).

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
603.7	2+		603.7 3	E2	0.0252	α=0.0252, α(K)=0.01757 25, α(L)=0.00568 8, α(M)=0.001438 21, α(N)=0.000379 6, α(O)=8.39×10^-5 12, α(P)=1.358E-5 20, α(Q)=6.28E-7 9
1205.1	4+		601.3 3	E2	0.0254	α=0.0254, α(K)=0.01770 25, α(L)=0.00574 8, α(M)=0.001455 21, α(N)=0.000384 6, α(O)=8.49×10^-5 12, α(P)=1.373E-5 20, α(Q)=6.34E-7 9
1377.8	4+		774.2 3	E2	0.01490	α=0.01490, α(K)=0.01106 16, α(L)=0.00288 4, α(M)=0.000716 10, α(N)=0.000189 3, α(O)=4.21×10^-5 6, α(P)=6.96E-6 10, α(Q)=3.85E-7 6
1955.2	6+		577.5 3	E2	0.0278	α=0.0278, α(K)=0.0191 3, α(L)=0.00646 10, α(M)=0.001642 24, α(N)=0.000433 7, α(O)=9.56×10^-5 14, α(P)=1.542E-5 22, α(Q)=6.87E-7 10
1955.2	6+		750.0 3	E2	0.01589	α=0.01589, α(K)=0.01172 17, α(L)=0.00313 5, α(M)=0.000780 11, α(N)=0.000206 3, α(O)=4.58×10^-5 7, α(P)=7.55E-6 11, α(Q)=4.09E-7 6
2050.9	8+	2.1 µs 1	95.7 5	E2	11.7	B(E2)(W.u.)=0.0357 23, α=11.7 4, α(L)=8.60 25, α(M)=2.34 7, α(N)=0.618 18, α(O)=0.131 4, α(P)=0.0190 6, α(Q)=6.44E-5 15
2268.4	(9+)		217.5 5	(M1)	1.73	α=1.73 3, α(K)=1.391 22, α(L)=0.257 4, α(M)=0.0613 10, α(N)=0.01617 25, α(O)=0.00369 6, α(P)=0.000643 10, α(Q)=5.04×10^-5 8
2575.1	(10+)		306.7 5	(M1)	0.667	α=0.667, α(K)=0.537 8, α(L)=0.0985 15, α(M)=0.0235 4, α(N)=0.00620 10, α(O)=0.001415 21, α(P)=0.000247 4, α(Q)=1.93×10^-5 3
2575.1	(10+)		524.2 7	(E2)	0.0346	α=0.0346, α(K)=0.0230 4, α(L)=0.00865 13, α(M)=0.00221 4, α(N)=0.000584 9, α(O)=0.0001286 19, α(P)=2.06×10^-5 3, α(Q)=8.38E-7 12
3093.4	(12+)		518.2 5	(E2)	0.0356	α=0.0356, α(K)=0.0235 4, α(L)=0.00897 13, α(M)=0.00230 4, α(N)=0.000606 9, α(O)=0.0001333 19, α(P)=2.13×10^-5 3, α(Q)=8.58E-7 13
3263.0	(12+)		169.5 7	(M1)	3.49	α=3.49 7, α(K)=2.80 6, α(L)=0.519 10, α(M)=0.1241 23, α(N)=0.0327 6, α(O)=0.00747 14, α(P)=0.001301 24, α(Q)=0.0001020 19
3263.0	(12+)		687.9 5	(E2)	0.0190	α=0.0190, α(K)=0.01375 20, α(L)=0.00394 6, α(M)=0.000988 14, α(N)=0.000260 4, α(O)=5.78×10^-5 9, α(P)=9.47E-6 14, α(Q)=4.85E-7 7
3898.5	(14+)		635.5 5	(E2)	0.0225	α=0.0225, α(K)=0.01595 23, α(L)=0.00491 7, α(M)=0.001237 18, α(N)=0.000326 5, α(O)=7.23×10^-5 11, α(P)=1.176E-5 17, α(Q)=5.67E-7 8
4257.0	(16+)		358.5 5	(E2)	0.0908	α=0.0908, α(K)=0.0491 7, α(L)=0.0309 5, α(M)=0.00812 13, α(N)=0.00214 4, α(O)=0.000466 7, α(P)=7.19×10^-5 11, α(Q)=1.89E-6 3

Q(β-)=-8330 keV 60	S(n)= 9470 keV 50	S(p)= 3061 keV 21	Q(α)= 7151 keV 3
Reference: 2012WA38

References:
A	²¹⁴Th α decay	B	¹⁷⁴Yb(⁴⁰Ar,4nγ)
C	¹⁸⁴W(³⁰Si,4nγ)	D	²⁰⁴Pb(¹²C,6nγ)

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+	3.7 s 2 % α ≈ 96 % ε ≈ 4
603.7 3	B C D	2+		603.7 3	100	E2	0.0	0+
1205.1 4	B C D	4+		601.3 3	100	E2	603.7	2+
1377.8 4	B C D	4+		774.2 3	100	E2	603.7	2+
1955.2 5	B C D	6+		577.5 3 750.0 3	100 5 59 3	E2 E2	1377.8 1205.1	4+ 4+
2050.9 7	B C D	8+	2.1 µs 1	95.7 5	100	E2	1955.2	6+
2268.4 8	C	(9+)		217.5 5	100	(M1)	2050.9	8+
2575.1 9	C	(10+)		306.7 5 524.2 7		(M1) (E2)	2268.4 2050.9	(9+) 8+
3093.4 10	C	(12+)		518.2 5	100	(E2)	2575.1	(10+)
3263.0 10	C	(12+)		169.5 7 687.9 5	10.9 16 100 5	(M1) (E2)	3093.4 2575.1	(12+) (10+)
3898.5 11	C	(14+)		635.5 5	100	(E2)	3263.0	(12+)
4257.0 12	C	(16+)		358.5 5	100	(E2)	3898.5	(14+)

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	0+	3.7 s 2 % α ≈ 96 % ε ≈ 4	%ε+%β⁺ has not been observed. Branching is from gross β decay theory (1973Ta30). E(level): %ε+%β⁺ has not been observed. Branching is from gross β decay theory (1973Ta30).
603.7	2+		E(level): G-sequence based on GS.
1377.8	4+		E(level): G-sequence based on GS.
1955.2	6+		E(level): G-sequence based on GS.
2050.9	8+	2.1 µs 1	Measured isomeric ratio, R_exp%=Observed decay yield/number of implanted ions, of 31 2 (2013Ba29) from ⁹Be(²³⁸U,X) projectile fragmentation reaction, E=1 GeV/nucleon. E(level): Measured isomeric ratio, R_exp%=Observed decay yield/number of implanted ions, of 31 2 (2013Ba29) from ⁹Be(²³⁸U,X) projectile fragmentation reaction, E=1 GeV/nucleon. Band based on 8⁺ isomer.
2268.4	(9+)		E(level): Band based on 8⁺ isomer.
2575.1	(10+)		E(level): Band based on 8⁺ isomer.
3093.4	(12+)		E(level): Band based on 8⁺ isomer.
3263.0	(12+)		E(level): G-sequence based on (12⁺).
3898.5	(14+)		E(level): G-sequence based on (12⁺).
4257.0	(16+)		E(level): G-sequence based on (12⁺).

E(level)	E(gamma)	Comments
603.7	603.7	E(γ): Weighted average of 603.5 6 (2004Re04) and 603.4 5 (2005Re02) from (³⁰Si,4nγ) and 604.5 6 (2004He25) from (¹²C,6nγ).
1205.1	601.3	E(γ): Weighted average of 601.2 5 (2004Re04) and 600.5 6 (2005Re02) from (³⁰Si,4nγ) and 602.1 6 (2004He25) from (¹²C,6nγ).
1377.8	774.2	E(γ): Weighted average of 773.7 5 (2004Re04) and 773.9 5 (2005Re02) from (³⁰Si,4nγ) and 774.6 4 (2004He25) from (¹²C,6nγ).
1955.2	577.5	E(γ): Weighted average of 577.1 5 (2004Re04) and 577.1 5 (2005Re02) from (³⁰Si,4nγ) and 578.0 4 (2004He25) from (¹²C,6nγ).
1955.2	750.0	E(γ): Weighted average of 749.7 5 (2004Re04) and 749.4 5 (2005Re02) from (³⁰Si,4nγ) and 750.5 4 (2004He25) from (¹²C,6nγ). I(γ): Other: 52.9 19 (¹²C,6nγ)