Calibration method at the N K-edge using interstitial nitrogen gas in solid-state nitrogen-containing inorganic compounds.
The standard method of soft X-ray beamline calibration at the N K-edge uses the nu = 0 peak transition of gas-phase N(2). Interstitial N(2) gas trapped or formed within widely available solid-state ammonium- and amine-containing salts can be used for this purpose, bypassing gas-phase measurements. Evidence from non-nitrogen-containing compounds (KH(2)PO(4)) and from He-purged ammonium salts suggest that production of N(2) gas is through beam-induced decomposition. Compounds with nitrate or nitrite as anions produce coincident features and are not suitable for this calibration method.
Gillespie
Adam W
AW
Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5A8. adam.gillespie@usask.ca
Walley
Fran L
FL
Farrell
Richard E
RE
Regier
Tom Z
TZ
Blyth
Robert I R
RI