1
H
.
 1
D
.

Advertisement

Chemical Elements

A Virtual Museum

© Jumk.de Webprojects | Imprint & Privacy
Chemical Calculators | Atomic Collider Simulation
 2
He
.
 3
Li
...
 4
Be
...
 5
B
...
 6
C
...
 7
N
.
 8
O
.
 9
F
.
 10
Ne
.
 11
Na
...
 12
Mg
...
 13
Al
...
 14
Si
...
 15
P
...
 16
S
...
 17
Cl
.
 18
Ar
.
 19
K
...
 20
Ca
...
 21
Sc
...
 22
Ti
...
 23
V
...
 24
Cr
...
 25
Mn
...
 26
Fe
...
 27
Co
...
 28
Ni
...
 29
Cu
...
 30
Zn
...
 31
Ga
...
 32
Ge
...
 33
As
...
 34
Se
...
 35
Br
..
 36
Kr
.
 37
Rb
...
 38
Sr
...
 39
Y
...
 40
Zr
...
 41
Nb
...
 42
Mo
...
 43
Tc
...
 44
Ru
...
 45
Rh
...
 46
Pd
...
 47
Ag
...
 48
Cd
...
 49
In
...
 50
Sn
...
 51
Sb
...
 52
Te
...
 53
I
...
 54
Xe
.
 55
Cs
...
 56
Ba
...
 57-71
La-Lu

 72
Hf
...
 73
Ta
...
 74
W
...
 75
Re
...
 76
Os
...
 77
Ir
...
 78
Pt
...
 79
Au
...
 80
Hg
..
 81
Tl
...
 82
Pb
...
 83
Bi
...
 84
Po
...
 85
At
...
 86
Rn
.
 87
Fr
...
 88
Ra
...
 89-103
Ac-Lr

 104
Rf

 105
Db

 106
Sg

 107
Bh

 108
Hs

 109
Mt

 110
Ds

 111
Rg

 112
Cn

 113
Nh

 114
Fl

 115
Mc

 116
Lv

 117
Ts

 118
Og

Home | Random
All, All2, Mosaic
Concentration game
Knowledge
Element properties
Records, Archives
 57
La
...
 58
Ce
...
 59
Pr
...
 60
Nd
...
 61
Pm
...
 62
Sm
...
 63
Eu
...
 64
Gd
...
 65
Tb
...
 66
Dy
...
 67
Ho
...
 68
Er
...
 69
Tm
...
 70
Yb
...
 71
Lu
...
Islands of Stability
 89
Ac
...
 90
Th
...
 91
Pa
...
 92
U
...
 93
Np
...
 94
Pu
...
 95
Am
...
 96
Cm
...
 97
Bk
...
 98
Cf
...
 99
Es
...
 100
Fm
...
 101
Md
...
 102
No
...
 103
Lr

 Particle Zoo | Advertisement

     98    

98 Cf Californium

Actinoid, mass: 251 u, no stable and no natural isotopes.

Californium disc, about 1 mm diameter. Photo: U.S. Department of Energy, released as public domain.

Californium

Californium emerges in tiny amounts rather randomly from plutonium via the elements between these two. With Californium, it is bothered to laboriously extract it, because for 252Cf, which has a a half-life of 2.6 years, there are reasonable applications. About 3% of this isotope spontaneously fissions into large chunks and hot neutrons. Therefore it is used as a strong neutron source, for example in detectors for metal fatigue and in medicine for very intense irradiation. The enrichment of californium 252 is very expensive, each year only about 0.1 grams are made. When used, strict safety regulations have to be complied, although in each case only some micrograms of it are involved. The isotope 251Cf has a half-life of 900 years. Most californium decays to curium.


Advertisement

Share:


 


Advertisement