Model 807 Vacuum Chamber

• Vacuum chamber designed for alpha and beta spectroscopy measurements

• Adjustable sample-to-detector distance (up to ~12.7 cm) for precise geometry control

• Compatible with semiconductor detectors (Si detectors, alpha spectroscopy systems)

• Supports beta-gamma coincidence measurements

• Single-valve system for easy vacuum pumping and venting

• Durable construction with stainless steel chamber and stable base design

• Easy detector access and replacement without direct handling

The Model 807 Vacuum Chamber is a versatile radiation detector accessory designed for routine alpha and beta counting applications using silicon charged particle detectors. This chamber provides a controlled vacuum environment that improves measurement accuracy by minimizing air attenuation and contamination effects. It is widely used in alpha spectroscopy systems, radiochemistry laboratories, and educational environments for demonstrating radiation detection principles. The design allows users to precisely set and measure the distance between the detector and the sample before measurement, ensuring reproducibility and experimental consistency. An additional advantage is its capability for beta-gamma coincidence measurements, where a gamma detector can be positioned beneath the chamber for advanced experimental setups. With its user-friendly operation, durable materials, and flexible configuration, the Model 807 is an essential accessory for laboratories requiring reliable and repeatable radiation measurements.

Product Type: Vacuum chamber for radiation detection systems Application: Alpha and beta counting Detector Compatibility: Silicon charged particle detectors (e.g., ULTRA, surface barrier detectors) Detector-to-Sample Distance: Adjustable up to ~12.7 cm Materials: Aluminum, chrome-plated brass, stainless steel, wood base Connector:

• External: Female BNC

• Internal: Microdot male

Vacuum System: Single valve (pump + vent control) Vacuum Connection: 1/4-inch OD tube fitting

• Alpha spectroscopy experiments

• Beta radiation counting and analysis

• Radiochemistry and environmental sample testing

• Smear testing in radiation safety laboratories

• Educational and training laboratories

• Beta-gamma coincidence measurements

• General-purpose semiconductor detector experiments