Spin-destruction collision

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In atomic physics, a spin-destruction (or spin-disorientation) collision is a physical impact where the spin angular momentum of an atom is irretrievably scrambled.

This type of collision can be a significant spin relaxation mechanism for polarized alkali metal vapor. In particular, the relaxation rate of alkali metal atoms in SERF atomic magnetometers is dominated by spin-destruction collisions.

More information σsd,self, σsd,He ...
Spin-destruction cross sections[1]
σsd,selfσsd,Heσsd,Neσsd,N2
K 1 × 10−18 cm2[2] 8 × 10−25 cm2[3]
Rb 9 × 10−18 cm2[3] 9 × 10−24 cm2[3] 5.2 × 10−23 cm2[4] 1 × 10−22 cm2[5]
Cs 2 × 10−16 cm2[6] 3 × 10−23 cm2[7] 6 × 10−22 cm2[7]
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