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pro vyhledávání: '"N. T. Peacock"'
Autor:
N. T. Peacock
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 10:2674-2678
The collector current in a hot cathode gauge at low pressure is the sum of the pressure dependent ion current and a nonpressure dependent residual current. A portion of this residual term is photocurrent caused by soft x‐ray production within the g
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 9:1977-1985
Ionization gauges are commonly used for pressure measurement from the lowest achievable pressures to 10−2 Torr. Two types exist: In the hot cathode gauge (HCG) the source of the ionizing electrons is a thermionic cathode. In the cold cathode gauge
Autor:
R. N. Peacock, N. T. Peacock
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 8:3341-3344
Since the accurate range of the spinning rotor gauge (SRG) does not extend below 10−4 Pa, constant sensitivity of high vacuum gauges for at least one decade above this value is important for their calibration when using an SRG. Two pairs of nude Ba
Autor:
R. N. Peacock, N. T. Peacock
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 8:2806-2809
Cold cathode discharge gauges use crossed electric and magnetic fields to trap electrons and thus obtain a long ionizing path. For many inverted magnetron type gauges, the magnet is cylindrical, located concentrically about the discharge cell, and th
Autor:
N. T. Peacock, R. N. Peacock
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 6:1141-1144
Single feedthrough cold cathode ionization gauges often suffer from spurious currents due to insulator leakage and field emission which mask the small pressure dependent ionization currents. This paper describes an inverted magnetron gauge tube desig