Datasheet > R331

R331

更新时间： 2024-11-19 22:24:47

品牌	Logo	应用领域
HAMAMATSU		光电
页数	文件大小	规格书
4页	55K
描述
PHOTOMULTIPLIER TUBES

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R331 数据手册

PHOTOMULTIPLIER TUBES

R331, R331-05

For Liquid Scintillation Counting

Bialkali Photocathode, 51mm (2 Inch) Diameter, 12 Stages, Head-On Type

The R331 and the R331-05 are 51mm (2 Inch) diameter series pho-

tomultiplier tubes specifically developed for the liquid scintillation count-

ing. They feature low background noise, high tritium efficiency, good

linearity and high gain. The R331 uses a synthetic silica input window

and the R331-05 uses a low K content borosilicate glass input window,

both with a frosted surface and convex-concave shape. They offer min-

imized glass scintillations and high collection efficiency.

FEATURES

Tritium efficiency in tritium window................................ 60% Typ.

Background noise in tritium window...............16cpm Typ. (R331)

18cpm Typ. (R331-05)

Tritium end point (T.E.P.) voltage.................................. 1700V Typ.

Dark pulse summation at T.E.P. voltage.............. 3 × 10⁴cpm Max.

Figure of merit (E²/B).......................................................... 200 Typ.

GENERAL

Parameter

Spectral Response

Wavelength of Maximum Response

R331

R331-05

Unit

Figure 1: Typical Spectral Response

TPMHB0505EA

160 to 650

300 to 650

100

CATHODE

RADIANT

420

R331

—

SENSITIVITY

Photo-

Material

Bialkali

mm dia.

cathode

Minimum Useful Area

Low K content

Synthetic silica

(Frosted)

—

Window

Material

borosilicate

R331-05

glass (Frosted)

—

Shape

Concave-Convex

Structure

Linear focused

QUANTUM

EFFICIENCY

Dynode

Direct

Number of Stages

Anode to Last Dynode

Interelectrode Anode to All Other

Capacitances Electrodes

Base

2.5

0.1

—

21-pin glass base

151

Weight

—

Suitable Socket

E678-21A (Supplied)

0.01

200

400

600

800

WAVELENGTH (nm)

Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.

Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are

subject to change without notice. No patent rights are granted to any of the circuits described herein.

1998 Hamamatsu Photonics K.K.

12 3 4

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