Table of Isotopes decay data

WWW Table of Radioactive Isotopes

144	La
57	La	87

Half life:

40.8 s 4

Jp:

(3-)

S_n (keV):

4780 58

S_p (keV):

8244 57

Prod. mode:

Fission product

ENSDF citation:

NDS 56,607 (1989)

Literature cut-off date:

1-Nov-1988

Author(s):

J.K. Tuli

References since cut-off:

¹⁴⁴La decay from 1988-98 (NSR)


Decay properties:
Mode	Branching (%)	Q-value (keV)
b^-	100	5541 56

Most Recent ENSDF Data (12/2002)
Mode	Data set name	Display data
b^-	144LA B- DECAY
	Tables:
	ENSDF data:
	Java applets:

TORI Data (1999) Gammas from ¹⁴⁴La (40.8 s 4)
Eg (keV)	Ig (%)	Decay mode

303.6 3	1.47 9	b^-
340.2 3	0.47 8	b^-
357.3 4	0.27 7	b^-
367.3 3	1.46 10	b^-
397.440 9	94.3 16	b^-
431.4 3	3.63 15	b^-
449.5 4	0.75 10	b^-
453.4 4	1.89 21	b^-
467.7 4	0.52 9	b^-
541.20 6	39.2 8	b^-
585.02 9	7.97 24	b^-
587.0 3	0.94 10	b^-
597.2 4	0.51 9	b^-
621.8 5	0.28 8	b^-
643.0 4	1.49 10	b^-
662.5 4	1.10 9	b^-
705.4 4	4.18 15	b^-
735.2 3	7.09 19	b^-
746.9 4	0.74 9	b^-
751.7 3	1.53 10	b^-
763.4 4	0.38 9	b^-
798.5 5	0.50 8	b^-
813.2 4	0.49 8	b^-
833.6 4	0.88 9	b^-
844.8 4	22.3 9	b^-
853.2 5	1.05 9	b^-
857.8 5	0.13 12	b^-
860.8 5	0.56 9	b^-
871.9 5	0.51 9	b^-
890.4 4	1.26 10	b^-
907.3 5	0.59 9	b^-
948.6		b^-
950.9 3	1.9 4	b^-
952.2 3	2.9 4	b^-
957.9 4	0.36 9	b^-
968.8 5	3.31 13	b^-
974.2 5	0.52 9	b^-
978.5 5	1.90 11	b^-
1006.2 5	0.16 5	b^-
1010.8 5	0.43 9	b^-
1017.8 5	0.26 6	b^-
1044.5 5	0.19 8	b^-
1052.7 3	2.02 11	b^-
1062.9 6	0.36 9	b^-
1070.2 5	0.99 10	b^-
1082.7 6	0.55 9	b^-
1084.3 6	0.75 14	b^-
1092.1 5	1.01 10	b^-
1102.1 5	1.25 10	b^-
1153.0 5	0.43 9	b^-
1170.2 5	0.46 9	b^-
1176.2 5	0.49 12	b^-
1190.4 6	0.47 9	b^-
1212.0 8	<0.49	b^-
1214.5 8	<0.49	b^-
1217.8 6	0.40 9	b^-
1237.8 6	0.59 9	b^-
1247.4 6	0.38 9	b^-
1276.3 5	1.61 11	b^-
1282.1 6	0.33 9	b^-
1294.2 5	3.8 4	b^-
1294.4 5	2.7 4	b^-
1307.4 6	0.19 5	b^-
1308.4 6	0.47 9	b^-
1346.1		b^-
1347.8 6	1.50 10	b^-
1357.8 5	0.28 9	b^-
1367.6 5	0.43 9	b^-
1380.1 6	0.74 10	b^-
1387.5 6	0.64 9	b^-
1401.1 6	0.72 9	b^-
1413.9 6	0.55 9	b^-
1421.8 6	1.13 10	b^-
1431.4 4	4.18 16	b^-
1437.8 6	0.13 8	b^-
1450.2 6	0.39 9	b^-
1467.1 6	0.60 9	b^-
1489.6 6	1.41 11	b^-
1499.3 7	0.70 10	b^-
1505.7 7	0.39 9	b^-
1523.5 7	3.48 15	b^-
1623.8 7	0.70 9	b^-
1631.8 7	1.04 10	b^-
1639.8 9	0.75 11	b^-
1641.9 9	0.28 15	b^-
1661.4 7	0.66 9	b^-
1673.7 6	1.39 11	b^-
1683.1 7	0.69 9	b^-
1714.6 8	0.98 17	b^-
1715.6 8	0.88 11	b^-
1754.7 9	0.41 8	b^-
1755.5 8	1.06 16	b^-
1756.8 8	0.35 9	b^-
1765.7 8	0.59 9	b^-
1804.4 8	0.67 9	b^-
1818.0 9	0.39 8	b^-
1819.1 9	0.12 12	b^-
1842.9 10	0.26 8	b^-
1863.8 9	0.28 10	b^-
1864.2 9	0.28 10	b^-
1930.9 8	0.21 7	b^-
1942.2 9	1.40 12	b^-
1942.7 9	0.31 7	b^-
1955.1 9	0.51 15	b^-
1955.2 9	0.92 12	b^-
1965.0 9	0.34 8	b^-
1966.8 9	0.37 8	b^-
1996.4 7	2.83 13	b^-
2007.8 9	1.17 9	b^-
2028.7 9	0.35 6	b^-
2036.5 9	0.43 9	b^-
2050.0 10	0.76 13	b^-
2051.4 10	0.53 9	b^-
2112.0 2	0.22 8	b^-
2131.0 16	0.06 3	b^-
2137.4 9	0.28 8	b^-
2150.8 9	0.19 8	b^-
2152.8 9	0.28 13	b^-
2154.0 10	0.25 7	b^-
2166.5 9	0.34 7	b^-
2182.1 9	0.11 4	b^-
2184.2 9	0.17 5	b^-
2258.7 9	0.65 8	b^-
2300.0 10	0.33 7	b^-
2323.7 9	0.35 7	b^-
2324.4 9	0.57 9	b^-
2339.5	0.27	b^-
2340.0 15	0.23 6	b^-
2352.4 10	0.25 9	b^-
2352.9 10	0.47 13	b^-
2353.6 10	0.21 5	b^-
2372.0 20	0.13 4	b^-
2386.8 20	<0.24	b^-
2390.3 20	<0.24	b^-
2464.2 10	0.14 4	b^-
2540.0 11	0.37 6	b^-
2547.6 11	0.11 4	b^-
2662.7 10	1.96 9	b^-
2731.4 12	0.12 3	b^-
2749.9 12	0.12 3	b^-
2865.2 12	1.04 9	b^-
2881.9 12	0.31 6	b^-
2896.2 12	0.30 6	b^-
2998.9 15	0.21 5	b^-
3007.4 15	0.19 5	b^-
3027.4 15	0.25 5	b^-
3060.0 15	0.12 3	b^-
3628.9 15	0.11 3	b^-
3632.4 15	0.09 3	b^-

X-rays from ¹⁴⁴La (40.8 s 4)
E (keV)	I (%)	Assignment

4.289	0.0047 6	Ce L_l
4.730	0.00199 21	Ce L_h
4.822	0.0128 14	Ce L_a2
4.840	0.116 13	Ce L_a1
5.263	0.074 8	Ce L_b1
5.276	0.0060 12	Ce L_b4
5.363	0.0102 21	Ce L_b3
5.434	0.00098 11	Ce L_b6
5.613	0.024 3	Ce L_b2
6.054	0.0113 12	Ce L_g1
6.326	0.0018 4	Ce L_g2
6.342	0.0025 5	Ce L_g3
33.894	9.5E-05 4	Ce K_a3
34.279	0.590 18	Ce K_a2
34.720	1.08 3	Ce K_a1
39.170	0.103 3	Ce K_b3
39.258	0.199 6	Ce K_b1
39.551	0.00249 11	Ce K_b5
40.228	0.0640 19	Ce K_b2
40.333	0.0181 8	Ce K_b4

Betas from ¹⁴⁴La (40.8 s 4)
Eb endpoint (keV)	Ib (%)	Decay mode

1566.4	0.12 3	b^-
1749.9	0.63 13	b^-
1832.3	0.93 13	b^-
1905	0.95 13	b^-
1911.1	1.08 10	b^-
1925.8	0.13 4	b^-
1942.9	0.73 10	b^-
1973.9	1.45 12	b^-
2131.5	1.41 15	b^-
2143.8	0.25 7	b^-
2168.1	0.34 8	b^-
2246.5	1.50 14	b^-
2261.4	1.25 14	b^-
2277	1.74 18	b^-
2301.15	7.3 3	b^-
2330.7	0.76 12	b^-
2342.82	9.3 4	b^-
2367	1.38 16	b^-
2532.1	0.59 10	b^-
2541.3	1.67 18	b^-
2636.4	1.13 19	b^-
2658	0.33 16	b^-
2658.3	2.20 21	b^-
2737.5	0.28 11	b^-
2790.1	0.46 20	b^-
2847.2	0.89 11	b^-
2897.59	7.6 5	b^-
3003.4	2.7 4	b^-
3005.7	6.53 25	b^-
3092.5	0.76 14	b^-
3134.8	0.34	b^-
3187.4	0.45 21	b^-
3200.2	2.00 19	b^-
3319.2	1.97 16	b^-
3413	0.4 3	b^-
3427.9	0.44 24	b^-
3499.3	1.01 24	b^-
3511.3	0.34 16	b^-
3518.9	0.32	b^-
3548.45	1.6 2	b^-
3710.99	1.2 3	b^-
3721	0.90 19	b^-
3848.47	1.1 6	b^-
3866.33	2.5 5	b^-
4051	1.13 21	b^-
4297.79	3.1 11	b^-
4601.35	9.6 10	b^-
5142.56	10.2 21	b^-

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