How to measure angular distribution of the diffusive and low energy neutral Na, K gases (10^6 atoms/cm^3) in an UHV vacuum (10-10 torr)

The kinetic energy of neutral atoms is around 2 eV. These neutral atoms are from ion irradiation surface (ion sputtering). There are some techniques like microbalance, TOF-position spectrometer,...

01 January 1970 3,641 3 View