Ion Implanted Silicon Alpha Particle Detectors0 pages

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fc^K BAL

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F BALTIC SCIENTIFIC

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21 INSTRUMENTS

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Silicon Ion Implanted

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Alpha Particle Detectors

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Application

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Ion Implanted Silicon Alpha Particle Detectors is a product for the precise alpha spectroscopy. The

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thin entrance window of the detector provides good energy resolution even in close location of the

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alpha radioactive source and also provides high efficiency registration of alpha particles.

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Features

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• The detectors can operate without hermetization due to location of P-N junction inside of the detector

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crystal

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• Contacts are formed using ion-implantation method and provide thin, well-formed junction

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• Relatively thin dead layer (less than 500 A)

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• High solidity entrance window

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• Possibility working in vacuum

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• Possibility of annealing the detectors up to 100 °C

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• The detectors may be equipped with BNC or MICRODOT connectors adapted for different customer

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needs.

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• The detectors are manufactured with open window as well as with metalized window.

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Baltic Scientific Instruments

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Ganibu Dambis 26

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Riga, LV-1005

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Latvia

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Phone: (+371)67383947

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Fax: (+371)67382620

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Email: detectors@bsi.lv

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www.bsi.lv

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40 0 & P particle

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Bringing Solutions

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Specification

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Detector

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area, mm2

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450

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300 -1200**

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Guaranteed energy

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resolution*, (keV)

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Alpha Beta

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20

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30

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15

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17

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Detector

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type

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Open

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Metalized

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Open

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Metalized

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Thickness, pm

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400 +/- 30

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400 +/- 30

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400 +/- 30

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400 +/- 30

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Detector bias

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voltage, V

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50

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50

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* Shaping time - 1 us.

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**The detectors of other sizes are available.

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The Ion Implanted Silicon Alpha Particle Detectors with metalized coating of entrance window can be

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used as a part of radioactive aerosol monitors. This is special version of the detectors having following

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features:

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• Allows the detector operation in ambient light

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• The metal coating provides mechanical and chemical protection. The thickness of entrance window is

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less than 2 [jm

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• Opportunity of operation at bias voltage - from +15 to +24 V.

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■fLSpe. ti^uneADA 11 ■ [>n. i«iFnt*^iKl^hi^t'.SXZMM vl)eU<tQp\Trip_U+50V_RI_iZZ+gen*hn- < ZS (I*-2Q12 *5Z:*S r>< Alpha >]

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Ffc Analyser Options Ptoc«slng Teals YWnttows HsJp

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H||■> g rff ||A-0,-^1 Hi, JL,C||» • = m\\l A

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^■1* "I

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238Pu, 239Pu, 233U

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spectrum

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182 LNfl! 2O7.0O jfls* 20?.DC |Ds*tl 0.00% Ouwud: 1S») \Caris.

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I E/lftffly; 8230.19 FW; H81

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Alpha Spectrometers include:

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• Vacuum chamber with vacuum control system,

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• Preamplifier,

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• Amplifier,

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• Discriminator,

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• High voltage supply,

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• Test-generator

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• Digital multichannel analyzer.

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Alpha spectrometer same as vacuum control are operated by software which also allows to process

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acquired spectra and analyze measurement results.

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a &p particle 41

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