Material:
Helium gas (He)
Atomic number:
2
Atomic weight:
4.002602
Density (20° C, 1 atm):
1.66E-04
g cm-3
Minimum ionization:
1.937
MeV g-1 cm2
Radiation length:
94.32
g cm-2 =
567114.44
cm
Critical energy (e-):
207.03
MeV
Molière radius:
9.66
g cm-2 =
58087.37
cm
Muon critical energy:
2352.
GeV
Table of muon dE/dx and Range:
PS PDF TEXT
Table of isotopes
xray mass attenuation coefficients