Electra DELTA 25 Bedienungsanleitung PDF herunterladen (Seite 14)

Alpha Scintillation Probes/Data

This 50 cm²

ZnS scintilla-

tion probe

offers excellent

alpha responses,

a low mechanical

profile and a conve-

niently angled grip. Easily-

repaired windows are provided with

protective covers for storage.

Uniformity is within ±10% over the

whole phosphor surface.

The A50L is used for general purpose

alpha monitoring. This probe can be

matched with Thermo's portable sur-

vey meters, such as the ASP-2, E-600,

RM-25, or Electra/Delta series. See

also AC-3.

• Light weight, low profile, angled grip

• Large radiation window, hex-mesh

grills, protective storage covers

• Connector, MHV

• Uniformity within ±10% over the

whole phosphor surface

• 50 cm² active area

Alpha

probe

with a

ZnS phos-

phor used for

survey and frisk-

ing in a lightweight cast

aluminum body. The radia-

tion window is 0.50 mg/cm² thick,

made of aluminized mylar. The AC-3-8

is fitted with a mesh grille. This probe

can be matched with Thermo's

portable survey meters, such as the

ASP-2, E-600, RM-25, or Electra/Delta

series.

• Operating voltage: 1,000 V nominal

• Dead time: 12 µs nominal

• Alpha efficiency (4π): 14%

239

• Operating temp: -30 ºC to 60 ºC

(-22 ºF to 140 ºF)

• Connector, CJ-1

• Size: 29.2 x 7.0 x 8.3 cm

(11.5” x 2.75” x 3.25”)

• 50 cm² window area

A50L

AC-3-7 and AC-3-8

Alpha Probe Data

Alpha efficiency is expressed as a percentage of the 2π flux of a certified reference source.

Order Code Radiation Window Efficiency Background Weight

Area

(cm²) Shape Isotope (MeV)

(% surface

emission)

-1

cmp

(kg) (lb)

A50L 62 rect. 230Th (4.682) >50% 0.6 1.3

AC-3-7, AC-3-8 59 rect. 0.6 1.4

AP2/4A 50 square 241Am (5.486) 35% <0.1 0.75 1.7

AP2R/4A 50 square 241Am (5.486) 25% <0.1 0.75 1.7

AP4/4A 20 disc 241Am (5.486) 35% <0.1 0.60 1.35

AP5AD 100 rect. 241Am (5.486) 35% <0.1 0.50 1.1

AP5RA 100 rect. 241Am (5.486) 23% <0.1 0.50 1.1

AP6A 600 rect. 241Am (5.486) 30% <0.1 1.55 3.5

HP-380 A 100 rect. 239Pu (5.1 MeV) 42% <0.1 <1.0 0.59 1.37

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 31 32

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