Isotopes of Curium (Z=96)
Click on an isotope to get more information about its decay
Isotope

Halflife

Spin
Parity

Decay Mode(s) or
Abundance 
^{ 233}Cm
 


^{ 234}Cm
  0+


^{ 235}Cm
 


^{ 236}Cm
  0+

%EC=?, %A=?

^{ 237}Cm
 


^{ 238}Cm
 2.4 h  0+

%EC=96.16 18, %A=3.84 18

^{ 239}Cm
 2.9 h  (7/2)

%EC= 100, %A < 0.1

^{ 240}Cm
 27 d  0+

%A > 99.5 , %EC < 0.5 , %SF=3.9E6 8

^{ 241}Cm
 32.8 d  1/2+

%EC=99.0 1, %A=1.0 1

^{241m1}Cm
 15.3 ns 


^{ 242}Cm
 162.8 d  0+

%A=100, %SF=6.37E6 18

^{242m1}Cm
 40 ps 


^{242m2}Cm
 0.18 us 


^{ 243}Cm
 29.1 y  5/2+

%A=99.71 3, %EC=0.29 3 , %SF=5.3E9 9

^{243m1}Cm
 42 ns 


^{ 244}Cm
 18.10 y  0+

%A=100, %SF=1.371E4 21

^{244m1}Cm
 34 ms  6+

%IT=100, %SF < 7.7E10

^{ 245}Cm
 8500 y  7/2+

%A=100, %SF=6.1E7 9

^{245m1}Cm
 13.2 ns 


^{ 246}Cm
 4730 y  0+

%A=99.9737 3, %SF=0.0263 3

^{ 247}Cm
 1.56e+7 y  9/2

%A=100

^{ 248}Cm
 3.40e+5 y  0+

%A=91.61 16, %SF=8.39 16

^{ 249}Cm
 64.15 m  1/2(+)

%B=100

^{ 250}Cm
 9000 y  0+

%SF ~ 86, %A ~ 8, %B ~ 6

^{ 251}Cm
 16.8 m  (1/2+)

%B=100

^{ 252}Cm
 2 d  0+

%B=100

Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory
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