比例計(jì)數(shù)管是一種檢測(cè)器，利用入射的X射線引起的內(nèi)部氣體的電離作用。通過(guò)向檢測(cè)器內(nèi)部的中心電極施加高電壓，使因X射線產(chǎn)生的離子對(duì)數(shù)量放大，因此可以取出大的信號(hào)。此外，還可以獲得與入射的X射線能量成正比的脈沖高度。
由于這些特性，用于X射線的比例計(jì)數(shù)管適用于測(cè)量鍍層厚度等。封入的氣體備齊了兩種，分別為氙（Xe）及用于低能量X射線的氖（Ne）。
特點(diǎn):
檢測(cè)器的使用壽命長(zhǎng)，穩(wěn)定性高。
產(chǎn)品陣容 ：
|
|
|
General Specifications
|
Window Specifications
|
Electrical Specifications
|
Resolution
|
|
|
Image
|
Tube Type
|
Fill Gas
|
Housing Material
|
Gas Pressure
|
Maximum Length
|
Maximum Diameter
|
Effective Length
|
Conne- ctor
|
Opera- ting Tempe- rature
|
Material
|
Thick- ness
|
Dimention
|
Operating Voltage Range
|
Recomme- nded Voltage
|
Fe-55 (5.9keV)
|
Cd-109 (22.1keV)
|
Down load
|
|
-
|
E6858
|
Xe+ additive gas
|
Stainless steel
|
approx. 100kPa
|
252mm
|
50.8mm
|
175mm
|
Pin
|
-20°C ～ 70°C
|
Beryllium
|
0.3 mm
|
40mm(W) X 82mm(L)
|
1,900 - 2,300V
|
2,000V
|
21% FWHM (Max.)
|
10% FWHM (Max.)
|
-
|
|
-
|
E6859B
|
approx. 90kPa
|
204mm
|
50.8mm
|
142mm
|
MHV
|
-20°C - 70°C
|
0.2 mm
|
40mm(W) X 82mm(L)
|
1,800 - 2,100V
|
1,850V
|
19% FWHM (Max.)
|
9% FWHM (Max.)
|
-
|
|
-
|
E6859C
|
approx. 100kPa
|
204mm
|
50.8mm
|
142mm
|
MHV
|
-20°C - 70°C
|
0.1mm
|
26mm(W) X 52mm(L)
|
1,900 -2,300V
|
2,000V
|
19%FWHM (Max.)
|
9%FWHM (Max.)
|
-
|
|
-
|
E6864
|
approx. 100kPa
|
178mm
|
50.8mm
|
116mm
|
MHV
|
-20°C - 70°C
|
0.1 mm
|
26mm(W) X 52mm(L)
|
1,900 - 2,300V
|
2,000V
|
19% FWHM (Max.)
|
9% FWHM (Max.)
|
-
|
|
-
|
E6860(C)
|
Ne+ additive gas
|
approx. 70kPa
|
156mm
|
38mm
|
75mm
|
MHV
|
-20°C - 70°C
|
Beryllium
|
0.062 mm
|
20mm(W) X 20mm(L)
|
1,100 - 1,400V
|
1,300V
|
20% FWHM (Max.)
|
-
|
-
|
|
-
|
E6860(P)
|
126mm
|
Pin
|
|
-
|
E6874
|
approx. 100kPa
|
120mm
|
25.4mm
|
68mm
|
SHV or MHV
|
-20°C - 70°C
|
Beryllium
|
0.025 mm
|
9.5mm(W) X 25.4mm(L)
|
1,300 - 1,500
|
1,360V
|
20% FWHM (Max.)
|
-
|
-
|
