Gaseous emission analysis from stainless-steel due to electron beam heating

Date

2022-05

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Abstract

Outgassing rates of stainless-steel at temperatures lower than 1000ยบ C is well documented over data collected for periods of time usually exceeding two hours. Observing the number of hydrogen molecules outgassed due to a high voltage electron beam can help understand the effects the released molecules have in pulsed power experiments. In ultrahigh vacuum where pressures reach hundreds of nano Torr, high voltage electron beams can cause heating of stainless steel which increase the rate of which hydrogen molecules outgas from the surface. Hydrogen molecules are able to absorb into the surface and layers closely underneath in more of an abundance in thicker pieces of stainless steel. Two of the smallest gauge stainless steel shims were tested at different peak voltage pulses to evaluate the amount of released hydrogen molecules due to the heating of the electron beam. This calculation of hydrogen molecules released due to near melting temperatures applied to the surfaces can be useful in other high voltage pulse power experiments where maintaining the pressure is critically important.


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Keywords

Hydrogen, Outgassing

Citation