Kimball Physics是電子槍的主要供應商，這些電子槍設(shè)計用于各種超高真空（UHV）表面物理學，空間物理學和處理應用程序。噴槍可以聚焦成小光斑，用于X射線生產(chǎn)，焊接和RHEED等應用；或用于泛光束，用于電荷中和，電子束洗滌，空間模擬和輻射損傷研究。

FRA-2X1-2 ELECTRON GUN SPECIFICATIONS
BEAM ENERGY 5 eV to 1000 eV (Independently adjustable)
BEAM CURRENT
1 nA to 400 μA (Independently adjustable)
with maximums of 50 μA at 5 eV, 100 μA at 50 eV, and
400 μA at 1000 eV
ENERGY SPREAD Approx. cathode thermal spread, calculated
Ta – 0.5eV Y2O3 – 0.4eV BaO – 0.3eV
SPOT SIZE
Flood beam: 2 mm to 50 mm. Spot size varies with
beam parameters. Design optimized for 20 mm dia spot
at 50 eV and 25 mm working distance.
WORKING DISTANCE Variable: 10 mm to 50 mm
BEAM DEFLECTION None
PULSE CAPABILITY
(using appropriate
pulse generator,
not included)
Optional Capacitive Pulse Junction Box: pulse width
20 ns to 100 μs , rise/ fall 10 ns, 50 Ω impedance, 1 W
standard (higher power available)
Optional Dual Grid Power Supply: pulse width 2 μs to
DC, rise/ fall 500 ns, rep rates to 5kHz (TTL required)
BEAM UNIFORMITY Gaussian
FIRING UNIT
For mounted gun: Customer-replaceable Firing Unit
includes precision-aligned cathode and Wehnelt (G-1)
assembly and anode, with insulators and connectors
CATHODE TYPES
Standard: Tantalum disc
Optional: Barium oxide (BaO) or Yttrium oxide (Y2O3)
With the exception of Barium oxide, cathodes are not
harmed by repeated exposure to atmospheric gases
while cold
MOUNTING
Standard: Unmounted— optional UHV mounting kit
(SS plates, clamps, wire, CFF/feedthrough)
Optional: Mounted—1a or 2? CFF with feedthrough
or Flange Multiplexer with a 2? inch rotatable CFF,
including both tapped and clear mounting holes
FARADAY CUP Various stand-alone designs are available
BEAM ALIGNMENT Optional: Mechanical alignment with ± 2° Port Aligner
INSERTION LENGTH
Unmounted: approximately 17.2 mm. Leads usually
extend 90 mm beyond gun structure
Mounted: Standard: 150 mm. Range: 110 to 170 mm.
Custom lengths available. Gun manufactured at standard
length unless otherwise specified at time of order.
GUN DIAMETER Unmounted: 13.2 mm
Mounted: 19.1 mm
FEEDTHROUGHS Multi-pin brazed ceramic, threaded stainless steel shell
CABLES /
CONNECTORS
Multi-conductor high voltage fully ground-shielded cable,
with mating aluminum shell connectors, to connect gun
and power supply. Standard lengths: 3 m Optional: 5 m
(included with system, optional with unmounted gun)
MAXIMUM BAKEOUT
Unmounted: 400°C
Mounted: 350°C with cables removed
(Faraday cup: removable pneumatic actuator 65°C max)