Note: Characterization of CaF2/acetone bandpass photon detector with Kr filter gas

Abstract

A modified design of a CaF(2)/acetone bandpass photon detector that uses Kr as a filter gas to tune the energy resolution is presented. Our design combines two standard single window detector tubes to build the Kr filter gas chamber. Synchrotron radiation has been used to determine the energy resolution of the detector, as a function of Kr pressure. The improvement in the detector energy resolution by 250 meV compared to the CaF(2)/acetone detector is better than that reported earlier. Substantial variation in the shape of the CaF(2)/acetone detector response functions is observed for different acetone pressure (≤3 mbar), and anode voltage (≤800 V). Our analysis reveals that the changes in the shape of the detector response function are associated to different regions of the detector operation.

Inverse photoemission and photoemission spectroscopic studies on sputter-annealed Ni–Mn–Sn and Ni–Mn–In surfaces

“…The details of the IPES spectrometer are provided in Refs. [18,19,20,21,22]. The total energy resolution was about 0.5 eV.…”

Electronic structure of the unoccupied electron energy states in FeSe1−xTex

“…Inverse photoemission spectroscopic (IPES) measurements were performed in the isochromat mode with a mean photon energy of 9.9 eV using a combination of electrostatically focussed Stoffel Johnson type electron gun with a contact potential [27] and an acetone gas filled photon band pass detector with a CaF 2 window [28,29]. The total energy resolution was $ 600 meV.…”

Low-energy inverse photoemission spectroscopy using a high-resolution grating spectrometer in the near ultraviolet range

“…Most IPES studies were carried out in the isochromat mode using bandpass photon detectors. 6,7 The bandpass detector is a combination of a photon detector with a sensitivity from 9 eV (e.g., Geiger-Müller tube [6][7][8][9][10][11][12][13][14][15][16][17] or alkali-halide sensitized electron multiplier [18][19][20][21][22] ) with a alkali-earth halide plate with a cut-off energy at 10 eV. These detectors have a bandpass centered around 9.5 eV.…”