DH_50 Cooled Multi-Alkali Photomultiplier (200-930nm)

  • DH_50 thermo-electrically cooled detector 200-930nm

Housing an end-window multi-alkali (S20 photocathode) photomultiplier tube, a mu-metal shield and a PCB based dynode chain, reliable operation can be ensured. Peltier elements, powered by the CPS50 ensure temperature control.

The 215 high voltage supply module maintains the photocathode at a negative high voltage. The photocurrent generated by this detector is best measured using the 487 picoammeter or the 477 pre-amplifier followed by the 496 lock-in amplifier.

The quick-change mounting flange supplied with the DH_50 is compatible with the entire range of Bentham monochromators and accessories.

Core benefits

Features

  • Housed photomultiplier tube featuring mu-metal shield and PCB dynode chain
  • Peltier-based cooling
  • Hermetically-sealed housing with quartz window
  • Operated in either the DC or AC regimes
  • Compatible with Bentham's entire range of monochromators and accessories
  • Recommended for use with 400 series detection electronics

Electro-Optical

Photocathode

S20

Active area

20mm dia,

Window material

UV Glass

Number dynodes

9

Dynode chain resistance

Linear: 750 kΩ

Pulse Counting: 3.92 MΩ

Operating mode

Photoemmisive

Spectral response range

200-900nm

Peak wavelength (typ.)

420 nm

Dark current (typ.)

1pA at 750V and -20°C

NEP

1.3 x 10-16 W.Hz-1/2

Range of temperature control

-20°C to +20°C

Max. high voltage

1250V DC

Max. anode current

100μA

Max. operating Temperature

-30 to +50°C

Mechanical

Connector

BNC/HV-BNC

Compatibility

Supplied with a quick change interface plate, 4 x M3 clearance holes (Bentham slit pattern)

Dimensions

 

Ordering Information

DH_50

Thermo-electrically cooled multi-alkali photomultiplier detector (200-930nm)

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