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UltraLo-1800 超低本底α计数器

产品详情

       

      

    The UltraLo-1800 is a windowless, ultra low background alpha  particle counter designed to measure the alpha particle e-missivity of solid materials. The system employs the technique of electronic back-ground suppression, which drives achievable ba-ckground rates to 0.0001 alphas/cm2/hr and below. This is a factor of 50 or  more bette-r than can be achieved by the conventional proportional  counter systems that are currently available. With the UltraLo-1800,  it become-s feasible to measure samples having emissivities in the  0.001 to 0.0005 alpha/cm2/hr range in fewer than 10 hours, and to measure em-issivities below 0.0005 alpha/cm2/hr in fewer than 100  hours.


 

 

 

 

 

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Counting system includes:


  • Counting Module. Sample handling, meas-urement chamber, si-gnal processing elect-ronics.

  • Support Box. Power supplies, gas control, etc.

  • Laptop. Windows 7 professional, x64

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Performance category

Specification

Required counting time for measurement of ULA (0.001)   sample1

(50%) 6 hrs, (25%) 24hrs, (12.5%) 90 hrs --   (measurement accuracy) time

Required counting time for measurement of LA (0.01)   sample1

(50%) 30 min, (25%) 2.5 hrs, (12.5%) 9 hrs --   (measurement accuracy) time

Typical counter efficiency

> 90% of 2π

Energy resolution (230Th source)

< 9% FWHM (at 4.6 MeV)

Energy sensitivity range

1-10 MeV

Sample sizes (typical min - max)

300mm wafer (707cm2) - 1800cm2

1 – Sample assumed to be 300mm wafer (count times drop by factor of 2.5 when using max sample area)

 


 

 

 

 

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Highlighted Features

Robust Data Management: Easily access and review both current

and historical measurement data.

Data Export: Generate and save datasets in convenient ASCII

format.

Report Generation: Measurement results saved to PDF reports.

System Health Information: Monitor system noise levels, gas flow rate, operating bias and more.

 

 

 

 

Requirements

Specification

Minimum sample size (typical)

300mm wafer (707cm2)

Maximum sample size

1800cm2

Maximum sample weight

20 lbs (9 kg)

Maximum sample thickness

0.25 in (6.3 mm)

Counting Gas

Argon

Gas pressure

21psi (150kPa) ±5%

Line Voltage

100-240 (VAC) 50/60 Hz

Power Consumption (Instrument)

50 W (100 W maximum)

Power Consumption (Laptop)

30 W

System dimensions (L x W x H)

65 in x 35 in x 27 in   (165 cm x 89 cm x 69 cm)

Weight

360 lb (163 kg)