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Isotopes of californium: Difference between revisions

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[[Category:Isotopes|Californium]]
[[Category:Isotopes|Californium]]

[[Category:Isotopes of californium]]


[[he:קליפורניום#איזוטופים של קליפורניום]]
[[he:קליפורניום#איזוטופים של קליפורניום]]

Revision as of 20:10, 13 June 2009

Californium (Cf) has no stable isotopes. A standard atomic mass cannot be given.

Table

nuclide
symbol
Z(p) N(n)  
isotopic mass (u)
 
half-life nuclear
spin
representative
isotopic
composition
(mole fraction)
range of natural
variation
(mole fraction)
excitation energy
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+

Notes

  • Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
  • Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

References