锎的同位素

锎 的同位素

圖表

符號	Z(p)	N(n)	質量(原子質量單位)	半衰期	原子核自旋	相對豐度	相對豐度的變化率
	激發能量
237Cf	98	139	237.06207(54)#	2.1(3) s	5/2+#
238Cf	98	140	238.06141(43)#	21.1(13) ms	0+
239Cf	98	141	239.06242(23)#	60(30) s [39(+37-12) s]	5/2+#
240Cf	98	142	240.06230(22)#	1.06(15) min	0+
241Cf	98	143	241.06373(27)#	3.78(70) min	7/2-#
242Cf	98	144	242.06370(4)	3.49(15) min	0+
243Cf	98	145	243.06543(15)#	10.7(5) min	(1/2+)
244Cf	98	146	244.066001(3)	19.4(6) min	0+
245Cf	98	147	245.068049(3)	45.0(15) min	(5/2+)
246Cf	98	148	246.0688053(22)	35.7(5) h	0+
247Cf	98	149	247.071001(9)	3.11(3) h	(7/2+)#
248Cf	98	150	248.072185(6)	333.5(28) d	0+
249Cf	98	151	249.0748535(24)	351(2) a	9/2-
249mCf	144.98(5) keV			45(5) µs	5/2+
250Cf	98	152	250.0764061(22)	13.08(9) a	0+
251Cf	98	153	251.079587(5)	900(40) a	1/2+
252Cf	98	154	252.081626(5)	2.645(8) a	0+
253Cf	98	155	253.085133(7)	17.81(8) d	(7/2+)
254Cf	98	156	254.087323(13)	60.5(2) d	0+
255Cf	98	157	255.09105(22)#	85(18) min	(7/2+)
256Cf	98	158	256.09344(32)#	12.3(12) min	0+

備註:畫上#號的數據代表沒有經過實驗的證明，只是理論推測而已，而用括號括起來的代表數據不確定性。

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锫的同位素	锎的同位素	鑀的同位素

参考文献

• Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
• Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
• Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
  • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
  • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
  • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.