CCF20120417002

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Table 1' ' Relevant properties of the 25 most popular resonance transitions [a: isotopic abundance, Eo: nuclear transition energy, tj ;₂: half lifetime, I_e and I_g: nuclear spin ąuantum number of excited (e) or ground (g) state, respectively, oq: maximum resonance cross section in barn, T: natural linę width, theoretical fuli width at half maximum, Er : recoil energy o'f the free atom, U: usage in percentage]. The isotopes listed represent 96.8/ć of the experimental work (courtesy John and Yirginia Stevens)

Isotope	a	Eo	tl/2	U		<70	2r	Er	U
	[*]	[keV]	[ns]			[10-^2Ocm^2j	[mm/s]	[lO-^3eV]	[%]
• 1. ^57Fe	2.19	14.4125	97.81	3/2	1/2	256.6	0.1940	1.957 i __ _
► 2. ^139Sn	2.19	136.46	8.7	5/2	1/2	4.300	0.2304	175.4 ^J
	8.58	23.87]	17.75	3/2	1 /2	140.3	0.6456	2.571	14.6
» 3. ^3 5 3 Eu	47.82	21.64	9.7	7/2	5/2	11.42	1.303	1.665	2,0
4. ^3 25Te	6.99	35.46	1.48	3/2	1/2	26.56	5.212	5.401	1.7
5. ^1:1 Sb	57.25	37.15	3.5	7/2	5/2	19.70	2.104	6.124	1.6
6. ^3201	(radioactive)	27.77	16.8	5 ^/0	7/2	40.32	0.5863	3.210	1.5
7. ^1 y ‘ A u	100	77.35	1.90	1/2	3/2	3.857	1.861	16.31	1.2
8. ^161 Dy	18.88	25.65	28.1	5/2	5/2	95.34	0.3795	2.194 •	)
	18.88	43.84	920	7/2	5/2	2S.29	0.0C6782	6.410	ł-^1
	18.88	74.57	3.35	3/2	5/2	6.755	1.095	1S.55	!
9.' ^2''"Np	(radioactive)	59.537	63.3	5/2	5/2	32.55	0.06727	8.031	0.8
10. ^1,0 Yb	3.03	84.262	1.60	2	0	23.93	2.029	22.43	0.7
1 1. ^366Er	33.41	80.56	1.82	2	0	23.56	1.865	20.99	0.6
12.' ^90Ru	12.72	89.36	20.5	3/2	5/2	14.28	0.1493	43.31	0.5
13. ^15:1 Gd	14.73	60.012	0.155	52	3/2	9.989	29.41	12.48 '
	14.73	86.54	6.32	5/2	3/2	34.40	0.5002	25.94	^ 0.3
14. ^393 Ir	14.73	105.303	1.16	5/2	3/2	24.83	2.239	33.42 -	1
	62.7	73.023	6.3	1/2	3/2	3.058	0.5946	l-i.54 -i —— 1 o ;
	~wn-	1T8.92	0.080	5/2	3/2	5.833	24.61	53.69 -<
15. ^369Tm	100	8.42	3.9	3/2	1/2	21.17	8.330	0.2253	0.4
16. ^63Ni	1.25	67.40	5.06	5/2	3/2	72.12	0.8021	39.99	0.4
17. ^3S1 Ta	99.99	6.23	6300	9/2	7/2	157.6	0.006457	s°:r 1
	99.99	136.25	0.0406	9/2	9/2	5.968	49.43
18. ^182 W	26.41	100.102	1.37	2	0	25.17	1.993	29.56	^—ÓTT
19. ^Ł3Kr	11.55	9.40	147	7/2	9/2	107.5	0.1980	0.5716	0.3
20. ^3 33 Cs	100	89.997	6.30	5/2	7/2	10.21	0.5361	26.49	0.3
21. ^133Eu	52.18	83.3652	0.82	7/2	5/2	6.705	4.002	24.39 -
	52.18	97.4283	0.21	5/2	5/2	17.97	}v.ó /	33.31 |	■ 0.3
	52.18	103.1774	3.9	3/2	5/2	5.417	0.6793	37.36 J
22. ^32'I	100	57.60	1.9	7/2	5/2	21.37	2.500	14.03	0.3
23. ^6' Zn	4.11	93.31	9150	3/2	5/2	10.12	0.000320	69.78	0.2
24. ^19:iPt	33.8	98.857	0.170	3/2	1/2	6.106	16.28	26.91 -i 46.35 ■>	0.2
25. ^73Ge	33.8	129.735	0.620	5/2	1/2	7.425	3.401
	7.76	13.263	4000	5/2	9/2	361.2	0.005156	1.294 34.77 ■>	0.2
	7.76	68.752	1.86	7/2	9/2	22.28	2.139

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