Series 6LB Automatic Low Background Alpha/Beta Counting System

Technical specification

SPECIFICATIONS (Preliminary – subject to change)
* All specifications are based on measurements performed at a Mirion manufacturing facility with 5.7 cm detector with ultra-thin window, unless noted otherwise.

PERFORMANCE
Background:

• Gross (alpha+beta): ≤ 1.0 cpm
• Alpha: ≤ 0.10 cpm
• Beta: ≤ 0.9 cpm

Efficiency:

• 4π efficiency measured with a NIST traceable standard point source 5.08 x 0.3 cm planchet in 0.3 cm insert.
• Warranty
  Alpha (210Po): ≥ 38%
  Beta (90Sr/90Y): ≥ 45%
• Counting efficiency is dependent on operating voltage, source thickness and distance from detector. Backscattering of high energy emitters produces higher than expected efficiency.

Spillover:

• ≤ 1.0% 210Po alpha into beta channel with the system adjusted for a ≤0.1% spillover of 90Sr beta into the alpha channel.

Detector Plateau:

• Alpha (210Po) – ≤ 2.5% slope/100 V: ≥ 800 V plateau
• Beta (90Sr) – ≤ 2.5% slope/100 V: ≥ 200 V plateau

Sample Count Rate:

• 500000 cpm with ≤ 1.5% deadtime loss

Counting Time Preset:

• Adjustable between 0.2 and 9999 minutes

PHYSICAL
Sample Changer Capacity:

• 50 or 100 samples – dependent on model

Weight:

• Net weight less cart – standard system 324 kg.
• Net weight cart with casters 54 kg.

Dimensions: (Height x Width x Depth)

• Table Top Model – 37 x 58 x 76 cm
• With 50 Sample Capacity – 75 x 58 x 76 cm
• With 100 Sample Capacity – 124 x 58 x 76 cm
• Cart With Casters – 76 x 58 x 76 cm