Maniraj, M. ; D'Souza, S. W. ; Nayak, J. ; Rai, Abhishek ; Singh, Sanjay ; Raja Sekhar, B. N. ; Barman, S. R. (2011) High energy resolution bandpass photon detector for inverse photoemission spectroscopy Review of Scientific Instruments, 82 (9). 093901_1- 093901 _5. ISSN 0034-6748
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Official URL: http://rsi.aip.org/resource/1/rsinak/v82/i9/p09390...
Related URL: http://dx.doi.org/10.1063/1.3630948
Abstract
We report a bandpass ultraviolet photon detector for inverse photoemission spectroscopy with energy resolution of 82 ± 2 meV. The detector (Sr0.7Ca0.3F2/acetone) consists of Sr0.7Ca0.3F2 entrance window with energy transmission cutoff of 9.85 eV and acetone as detection gas with 9.7 eV photoionization threshold. The response function of the detector, measured using synchrotron radiation, has a nearly Gaussian shape. The n = 1 image potential state of Cu(100) and the Fermi edge of silver have been measured to demonstrate the improvement in resolution compared to the CaF2/acetone detector. To show the advantage of improved resolution of the Sr0.7Ca0.3F2/acetone detector, the metal to semiconductor transition in Sn has been studied. The pseudogap in the semiconducting phase of Sn could be identified, which is not possible with the CaF2/acetone detector because of its worse resolution.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Calcium Compounds; Electrical Conductivity Transitions; Inverse Photoemission Spectroscopy; Organic Compounds; Photodetectors; Photoionisation; Strontium Compounds; Ultraviolet Detectors |
| ID Code: | 93086 |
| Deposited On: | 13 Jun 2012 10:58 |
| Last Modified: | 13 Jun 2012 10:58 |
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