title: RC-encoding for position-sensitive proportional counters using low-resistance, metal-wire anode and active load capacitance.
abstract: We developed a feedback-stabilized, active load-capacitance to use low-resistance, metal-wire anodes in RC-line encoded, position-sensitive proportional counters (PSPCs) of any length. A 12-cm-long experimental PSPC was tested using a 12-mum-diam Nichrome wire anode and an approximately 21 pF active load capacitance. The spatial sensitivity and resolution are equivalent to those of similar PSPC with a carbon-coated quartz anode; but the ruggedness, ease of handling, and stability at high count rates are distinct advantages of the metal-wire anode.
authors.affiliation: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.
authors.forename: M K
authors.initials: MK
authors.lastname: Kopp
mesh_terms: D000669:Amplifiers, Electronic; D002244:Carbon / Q000737:chemistry; D025802:Electric Capacitance; D004553:Electric Conductivity; D011211:Electric Power Supplies; D004566:Electrodes; D004582:Electronics, Medical / Q000295:instrumentation; D004867:Equipment Design; D011791:Quartz; D011846:Radio Waves; D015203:Reproducibility of Results; D014159:Transducers
chemical_list: D011791:Quartz; D002244:Carbon