dorsal/arxiv
View SchemaOptical properties of bialkali photocathodes
| Authors | Dario Motta, Stefan Schoenert |
|---|---|
| Categories | |
| ArXiv ID | physics/0408075 |
| URL | https://arxiv.org/abs/physics/0408075 |
| DOI | 10.1016/j.nima.2004.10.009 |
| Journal | Nucl.Instrum.Meth.A539:217-235,2005 |
Abstract
The optical properties of the `bialkali' KCsSb and RbCsSb photomultiplier cathodes have been experimentally investigated in the visible range. The measurements carried out include the absolute reflectance at near-normal incidence, the polarization-dependent relative reflectance at various angles and the change in polarization upon reflection from the photocathode. These experimental inputs have been combined with a theoretical model to determine the complex refractive index of the photocathodes in the wavelength range 380 to 680 nm and their thickness. As a result of this work, we derive a model which predicts the fraction of light impinging on a photomultiplier tube that is reflected, absorbed or transmitted, as a function of wavelength and angle, and dependent on the medium to which the photomultiplier is coupled.
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"abstract": "The optical properties of the `bialkali\u0027 KCsSb and RbCsSb photomultiplier\ncathodes have been experimentally investigated in the visible range. The\nmeasurements carried out include the absolute reflectance at near-normal\nincidence, the polarization-dependent relative reflectance at various angles\nand the change in polarization upon reflection from the photocathode. These\nexperimental inputs have been combined with a theoretical model to determine\nthe complex refractive index of the photocathodes in the wavelength range 380\nto 680 nm and their thickness. As a result of this work, we derive a model\nwhich predicts the fraction of light impinging on a photomultiplier tube that\nis reflected, absorbed or transmitted, as a function of wavelength and angle,\nand dependent on the medium to which the photomultiplier is coupled.",
"arxiv_id": "physics/0408075",
"authors": [
"Dario Motta",
"Stefan Schoenert"
],
"categories": [
"physics.ins-det"
],
"doi": "10.1016/j.nima.2004.10.009",
"journal_ref": "Nucl.Instrum.Meth.A539:217-235,2005",
"title": "Optical properties of bialkali photocathodes",
"url": "https://arxiv.org/abs/physics/0408075"
},
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