Compact <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mo>−</mml:mo><mml:mn>300</mml:mn><mml:mtext> </mml:mtext><mml:mi>kV</mml:mi></mml:mrow></mml:math> dc inverted insulator photogun with biased anode and alkali-antimonide photocathode
Physical review. Accelerators and beams