Table of Isotopes decay data

WWW Table of Radioactive Isotopes

228	Fr
87	Fr	141

Half life:

38 s 1

Jp:

S_n (keV):

4.45E3 sy

S_p (keV):

7.0E3 sy

ENSDF citation:

NDS 80, 723 (1997)

Literature cut-off date:

1-Nov-1996

Author(s):

A. Artna-Cohen

References since cut-off:

²²⁸Fr decay from 1996-98 (NSR)


Decay properties:
Mode	Branching (%)	Q-value (keV)	References
b^-	100	4.34E3 sy	82Ru04 82RuZW

Most Recent ENSDF Data (12/2002)
Mode	Data set name	Display data
b^-	228FR B- DECAY
	Tables:
	ENSDF data:
	Java applets:

TORI Data (1999) Gammas from ²²⁸Fr (38 s 1)
Eg (keV)	Ig (%)	Decay mode

63.83 2	0.93 8	b^-
140.86 2	5.3 5	b^-
167.1 3	<0.027	b^-
171.4 1	0.096 11	b^-
172.4 2	0.032 5	b^-
206.98 4	0.251 21	b^-
224.35 8	0.123 11	b^-
233.25 4	0.37 3	b^-
244.4 1	0.048 11	b^-
247.01 8	0.112 11	b^-
296.53 5	0.41 4	b^-
332.91 5	2.51 16	b^-
342.88 6	0.256 21	b^-
365.64 6	0.278 21	b^-
377.5 2	0.048 11	b^-
379.0 2	0.053 11	b^-
405.91 8	0.171 16	b^-
410.40 6	6.1 3	b^-
422.3 2	0.080 11	b^-
425.1 1	0.059 11	b^-
451.20 6	0.99 5	b^-
468.4 1	0.053 16	b^-
473.7 1	10.0 11	b^-
474.0 1	7.5 14	b^-
493.9 1	0.128 11	b^-
498.8 1	0.085 11	b^-
515.2 2	0.17 4	b^-
526.22 8	0.144 11	b^-
532.68 8	0.107 11	b^-
549.83 7	1.27 9	b^-
551.9 1	0.096 16	b^-
565.8 1	0.342 21	b^-
567.8 1	0.53 3	b^-
595.8 1	0.107 11	b^-
600.8 1	0.198 11	b^-
613.06 8	1.35 7	b^-
625.6 1	0.176 11	b^-
644.9 1	0.48 3	b^-
657.4 2	0.256 16	b^-
675.6 5	0.112 16	b^-
694.2 1	0.60 3	b^-
706.9 1	0.49 3	b^-
751.5 3	0.155 16	b^-
762.4 2	0.64 3	b^-
764.5 3	0.352 21	b^-
767.1 5	0.128 21	b^-
770.7 1	0.64 3	b^-
782.3 1	2.07 11	b^-
790.5 5	0.101 11	b^-
816.5 3	0.46 3	b^-
821.7 5	0.203 16	b^-
824.4 5	0.235 16	b^-
835.0 2	2.83 16	b^-
846.2 2	1.48 8	b^-
852.5 5	0.155 16	b^-
865.8 2	0.96 5	b^-
869.7 2	0.326 21	b^-
898.7 2	0.81 4	b^-
904.4 2	1.01 5	b^-
919.5 3	0.33 3	b^-
922.3 3	0.56 3	b^-
925.8 2	1.06 5	b^-
934.3 2	0.336 21	b^-
937.6 5	0.144 16	b^-
949.4 2	4.17 21	b^-
952.9 3	0.46 3	b^-
983.6 3	0.358 21	b^-
989.8 3	1.66 9	b^-
1001.6 5	0.18 3	b^-
1005.0 5	0.53 11	b^-
1006.5 5	0.91 13	b^-
1013.7 10	0.11 3	b^-
1013.7 10	0.11 3	b^-
1015.7 8	0.24 5	b^-
1024.4 10	0.26 5	b^-
1027.2 5	0.26 5	b^-
1033.0 10	0.42 8	b^-
1041.6 8	0.53 11	b^-
1043.2 8	1.07 21	b^-
1048.8 10	0.29 3	b^-
1052.4 10	0.20 3	b^-
1083.2 10	0.28 3	b^-
1092.8 5	1.20 6	b^-
1096.9 8	0.79 4	b^-
1105.6 8	0.62 4	b^-
1137.3 10	0.23 3	b^-
1145.0 5	0.34 3	b^-
1162.0 10	0.35 3	b^-
1171.0 10	0.40 3	b^-
1174.2 5	1.29 6	b^-
1180.3 10	0.16 3	b^-
1190.8 15	0.22 4	b^-
1194.2 15	0.18 3	b^-
1206.0 15	0.18 3	b^-
1211.5 15	0.13 3	b^-
1224.6 5	0.46 3	b^-
1234.9 15	0.19 4	b^-
1246.6 10	0.40 3	b^-
1259.5 10	0.34 3	b^-
1303.1 10	0.198 21	b^-
1310.9 10	0.28 3	b^-
1318.8 10	0.20 4	b^-
1332.6 10	0.30 3	b^-
1340.2 10	0.27 5	b^-
1342.7 10	0.16 3	b^-
1359.2 15	0.123 21	b^-
1390.8 10	0.214 21	b^-
1406.4 15	0.16 3	b^-
1429.2 15	0.17 3	b^-
1432.9 15	0.26 4	b^-
1454.7 10	0.214 21	b^-
1468.0 10	0.208 21	b^-
1484.8 15	0.19 4	b^-
1487.7 15	0.14 3	b^-
1491.8 15	0.160 16	b^-
1501.6 15	0.203 21	b^-
1514.9 15	0.144 16	b^-
1532.2 15	0.262 21	b^-
1566.9 10	0.69 4	b^-
1572.4 10	1.37 9	b^-
1601.1 15	0.23 4	b^-
1631.0 15	0.139 21	b^-
1637.7 10	0.235 21	b^-
1644.2 10	0.31 3	b^-
1656.7 15	0.160 16	b^-
1663.7 15	0.21 3	b^-
1695.6 10	0.230 21	b^-
1715.5 10	0.288 21	b^-
1725.9 15	0.150 16	b^-
1754.8 10	0.33 6	b^-
1800.5 15	0.171 16	b^-
1811.3 10	0.46 3	b^-
1844.8 10	0.56 4	b^-
1847.5 10	0.37 5	b^-
1858.8 10	0.166 16	b^-
1865.5 15	0.11 3	b^-
1879.3 15	0.11 3	b^-
1885.9 10	0.44 3	b^-
1902.8 10	0.155 16	b^-
1911.5 10	0.278 21	b^-
1930.5 10	0.42 3	b^-
1934.8 15	0.203 16	b^-
1943.4 10	0.278 21	b^-
1955.9 10	0.278 21	b^-
1963.0 10	0.251 21	b^-
1973.8 10	0.283 21	b^-
1991.5 10	0.29 5	b^-
1996.0 15	0.28 5	b^-
2007.0 10	0.23 4	b^-
2033.7 10	0.76 8	b^-
2043.5 10	0.69 7	b^-
2047.8 10	2.19 21	b^-
2063.2 10	0.230 21	b^-
2077.6 10	0.59 6	b^-
2097.4 10	1.23 12	b^-
2104.7 10	0.50 5	b^-
2114.1 10	0.27 3	b^-
2131.4 10	0.41 3	b^-
2137.8 15	0.182 21	b^-
2156.0 15	0.150 21	b^-
2162.4 15	0.19 3	b^-
2170.7 15	0.134 21	b^-
2177.8 10	0.34 4	b^-
2181.7 15	0.17 3	b^-
2193.8 15	0.085 16	b^-
2206.7 15	0.123 16	b^-
2219.8 15	0.10 3	b^-
2283.4 15	0.17 3	b^-
2286.6 15	0.23 3	b^-
2392.3 10	0.24 3	b^-
2414.2 10	0.58 5	b^-
2442.9 15	0.192 21	b^-
2454.3 15	0.208 21	b^-

X-rays from ²²⁸Fr (38 s 1)
E (keV)	I (%)	Assignment

10.622	0.68 9	Ra L_l
12.196	1.22 13	Ra L_a2
12.339	10.9 12	Ra L_a1
13.662	0.33 3	Ra L_h
14.236	0.192 21	Ra L_b6
14.749	0.133 25	Ra L_b4
14.825	2.8 3	Ra L_b2
15.236	13.0 13	Ra L_b1
15.375	0.51 6	Ra L_b5
15.447	0.13 3	Ra L_b3
17.848	3.0 3	Ra L_g1
18.177	0.050 10	Ra L_g2
18.353	0.053 11	Ra L_g3
18.412	0.63 8	Ra L_g6
84.683	0.0058 11	Ra K_a3
85.431	2.2 4	Ra K_a2
88.471	3.6 7	Ra K_a1
99.432	0.44 8	Ra K_b3
100.130	0.84 16	Ra K_b1
100.739	0.028 6	Ra K_b5
102.948	0.32 6	Ra K_b2
103.296	0.109 21	Ra K_b4

Betas from ²²⁸Fr (38 s 1)
Eb endpoint (keV)	Ib (%)	Decay mode

2171.8	0.89 10	b^-
2178.7	2.2 2	b^-
2201.7	1.22 13	b^-
2229.2	5.4 6	b^-
2232.07	1.05 12	b^-
2299	1.8 2	b^-
2365.39	1.6 2	b^-
2428.18	2.2 2	b^-
2760.2	1.4 2	b^-
2821.13	1.4 3	b^-
2832.86	0.55 10	b^-
2844.67	0.32 6	b^-
2868.25	0.67 7	b^-
2990.5	0.49 6	b^-
3101.5	1.6 2	b^-
3120.03	0.12 6	b^-
3157.74	0.62 6	b^-
3182.41	1.11 13	b^-
3230.9	0.64 9	b^-
3252.72	2.1 3	b^-
3269.77	3.6 8	b^-
3287.22	1.3 2	b^-
3297.99	0.21 4	b^-
3326.76	2.7 4	b^-
3441.15	1.7 8	b^-
3459.7	0.19 5	b^-
3493.85	3.0 3	b^-
3569.29	1.9 2	b^-
3802.51	7.4 13	b^-
3865.82	8 2	b^-
4135.32	8 2	b^-
4276.18	22 8	b^-
4340	24	b^-

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