High energy resolution bandpass photon detector for inverse photoemission spectroscopy

被引：14

作者：

Maniraj, M. ^{[1
]}

D'Souza, S. W. ^{[1
]}

Nayak, J. ^{[1
]}

Rai, Abhishek ^{[1
]}

Singh, Sanjay ^{[1
]}

Sekhar, B. N. Raja ^{[2
]}

Barman, S. R. ^{[1
]}

机构：

[1] UGC DAE Consortium Sci Res, Indore 452001, Madhya Pradesh, India

[2] Bhabha Atom Res Ctr, Atom & Mol Phys Div, Bombay 400085, Maharashtra, India

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2011年 / 82卷 / 09期

关键词：

calcium compounds; electrical conductivity transitions; inverse photoemission spectroscopy; organic compounds; photodetectors; photoionisation; strontium compounds; ultraviolet detectors; ELECTRONIC STATES; SPECTROMETER; SURFACES; ANGLE;

D O I：

10.1063/1.3630948

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report a bandpass ultraviolet photon detector for inverse photoemission spectroscopy with energy resolution of 82 +/- 2 meV. The detector (Sr(0.7)Ca(0.3)F(2)/acetone) consists of Sr(0.7)Ca(0.3)F(2) 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 CaF(2)/acetone detector. To show the advantage of improved resolution of the Sr(0.7)Ca(0.3)F(2)/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 CaF(2)/acetone detector because of its worse resolution. (C) 2011 American Institute of Physics. [doi:10.1063/1.3630948]

引用

页数：5

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