AP3 ultra-thin polymer windows are the highest performing x-ray
windows available for low energy x-ray analysis. AP3 windows are ideal
for applications that require high x-ray transmission of light element
energies, high mechanical strength, light rejection, vacuum tightness, and
Ultra-thin Polymer X-ray Windows
Ultra-thin polymer window
Silicon support structure
UV, IR, and visible light rejection
High transmission of low energies
High mechanical strength, durable
Low detector noise
Chemical resistant, hermetic seal
Low spectral contamination
• Si(Li) Detectors
• Si-PIN Detectors
• Silicon Drift Detectors (SDD)
452 West 1260 North
Orem, UT 84057
AP3 windows are composed of ultra-thin layers of MOXTEK
polymer, DuraCoat™, and aluminum. AP3 windows are supported
by a silicon support structure which is attached to a metal mount.
AP3.3 windows are used in applications that require the highest
transmission of low energy x-rays. AP3.7 windows are used in
applications where maximum light element sensitivity is not required.
Both of these windows are used in applications where conventional
beryllium windows are ineffective.
Light Rejection and Vacuum Tightness
AP3 windows provide excellent rejection of UV, IR, and visible light.
AP3 windows also provide a hermetic barrier to gases. Every
window is tested and is guaranteed to have a leak rate of less than 5 x
10-10 mbar L/sec of helium.
AP3 windows are supported by a rigid silicon grid with 77% open
area. This patented window design enables the window to withstand
over 1.3 atmospheres of differential pressure. AP3 windows have
survived over 100,000 cycles at a differential pressure of 1.2 atm
without degradation in window performance.