title: Calibration method at the N K-edge using interstitial nitrogen gas in solid-state nitrogen-containing inorganic compounds.
abstract: 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.
authors: Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5A8. adam.gillespie@usask.ca
authors: Adam W
authors: AW
authors: Gillespie
authors: Fran L
authors: FL
authors: Walley
authors: Richard E
authors: RE
authors: Farrell
authors: Tom Z
authors: TZ
authors: Regier
authors: Robert I R
authors: RI
authors: Blyth