Electra DELTA 25 Manual do Utilizador descarregar pdf (Página 20)

Beta Scintillation Probes/Data

A scintillation beta probe with high

sensitivity to low, medium and high-

energy beta radiation. The BP4 Family

has the highest efficiency to

C. Extra

window protection is obtained by

increasing the window/grill spacing.

This probe can be matched with

Thermo's portable survey meters,

such as the Electra/Delta series,

ASP-2, E-600, or RM-25.

• Circular radiation window suits 5 cm

(2”) filter paper wipes

• Matched to 710C Lead Castle for

counting beta

• Choice

of spacings, win-

dow-grille: BP4/4A, 3

mm (0.12”); BP4/4B, 6

mm (0.24”); BP4/4C, 9 mm (0.35”)

• BP4A uses a PET connector; BP4B

uses an MHV connector; IBP4B is the

intelligent version used only with the

Selectra

• Beta calibration sources:

C beta

RRS 12A,

CI beta RRS 14A.

Large

area

scintilla-

tion

probe with an

anthracene phos-

phor for general pur-

pose monitoring of low,

medium and high-energy

beta, with a 50 cm² window angled at

45 degrees to the probe axis. The low

response to gammas can be an impor-

tant consideration in high background

applications. The BP20A is a version fit-

ted with an NE 102A equivalent plastic

phosphor.

This probe can be matched with

Thermo's portable survey meters, such

as the Electra/Delta series, ASP-2,

E-600, or RM-25.

• Premium beta over gamma response

suits high background applications

• 45° angled radiation window

• BP7A uses a PET connector; BP7 uses

an MHV connector; IBP17B is the

intelligent version used only with the

Selectra

• Calibration sources:

C beta RRS 22A,

Cl beta RRS 24A.

BP4 Family

BP7 Family

Beta Scintillation Probe Data

Order Window Efficiency (% Surface emission) Background

Cs (γ) Response

Weight

Code

Area Shape

Beta

-1

cpm s

-1

cpm (kg) (lb)

(cm²)

Sr/

Y(per

(per

µSv/h) 100 µR/h)

BP1/4A 1.36 disc — 58% <1.0 30 1800

BP4/4A 20 disc 24% 36% 44% 46% <4 <240 25 1500

BP4/4B 20 disc 15% 25% 32% 34% <4 <240 25 1500

BP4/4C 20 disc 11% 21% 25% 27% <4 <240 25 1500

BP7/4A 50 square 18% 27% 39% 41% <4 <240 12 720 0.75 1. 7

BP13A 80 annular — 9% 15% 16% <7 <480 60 4200 0.875 2

BP17A 600 rect. — 19% 36% 42% <30 <1800 250 15,000 1.55 3.5

BP19AD 100 rect. 14% 32% 49% 51% <10 <600 50 3000 0.5 1.1

BP19DD 100 rect. 21% 34% 48% 51% <8 <480 40 2400 0.5 1.1

HP-380B 100 rect. 28% 52% <10 <600 50 3000 0.59 1.37

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 31 32

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