Detectors for Vacuum Ultraviolet Radiometry
For many years, NIST has offered detector
standards in the vacuum ultraviolet spectral region. These detectors find use
in many diverse applications including astronomy, solar physics, space science,
and plasma diagnostics. NIST calibrated transfer standard detectors are
available covering the spectral range from 5 nm to 254 nm. These
detectors are chosen for their high stability (both long term and under
radiation exposure) and spatial uniformity of response. In the magnesium
fluoride window region (116 nm to 254 nm), standard detectors are
cesium
telluride photoemissive photodcathodes deposited onto a magnesium fluoride
window. Standard detectors at shorter wavelengths (5 nm to 122 nm)
are windowless
aluminum oxide photoemissive photodetectors. Additionally, specially
processed
silicon solid state photodiodes are available from NIST in the vacuum
ultraviolet spectral region (5 nm to 254 nm). Some other types
of detectors can be calibrated by special arrangement.
Ordering Information, NIST Test Numbers, and Fees
Inquiries and orders for vacuum ultraviolet detector calibrations should be
directed to
Rob Vest.
All fee schedules are effective 22 Feb 2005. Additional tests in the vacuum
ultraviolet (5 nm to 254 nm) will be billed at cost under test number
40599S.
Fee Schedule for NIST Vacuum UV Transfer Standard Photodiodes
Photodiodes being returned to NIST for recalibration must be removed
from user fixtures prior to shipment to NIST.
U.S. Orders: Fees are FOB destination (UPS ground). Terms are net 30.
Foreign Orders: It is NIST policy that orders originating from
outside the U.S. be paid in advance. The NIST
Calibration
Program provides
information about and makes arrangements for prepayment. Foreign orders will
be shipped via air freight.
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