Radiation Solutions RS-700/RS-701 RSX-1 Gamma-Ray Spectrometer


  • Environmental: Lost Sources, Contamination
  • Emergency Response: Nuclear Incident Response Teams
  • Security: Customs, Military
  • Geophysical, Uranium, Gas & Oil Exploration

Key Unique Features

  • Accurate “the first time” technology
    The advanced digital design using FPGA/DSP technology and signal processing provides a more stable operation, with less drift, producing a pure spectra that results in better data for you. In addition to the externally recorded data, the RS-700 series records internally the last 24 hours that can be easily retrieved if required.
  • Effectively no Dead-time as each crystal has it’s own A/D converter within it’s own ADS
  • 1024 channel resolution for any number of crystals at up to 10x per second
  • Menu selectable 1024, 512 or 256 channel output
  • Individual crystal ADC and processing resulting in improved pulse pile-up rejection, zero dead time, and a higher throughput
  • Virtually no distortion, each crystal output is fully linearised permitting multi-crystal summing without distortion
  • Effectively no signal degradation when summing an unlimited number of crystals – common on most current systems
  • No radioactive test sources required for system setup. or for system performance validation
  • Extremely wide dynamic range 250,000 cps for each crystal providing >20x improvement on signal throughput compared to older systems
  • High level of self diagnostics with sophisticated error correction & reporting requiring less operator interaction
  • Fully multi-peak automatic gain stabilisation on natural isotopes for world wide use

RadAssist Software with mapping & Nuclide Identification features

RadAssist is a suite of utilities, running under Windows XP providing the user with control and monitoring capabilities. The software operates in real-time or in playback mode. Along with the functions above, the following outlines some of the additional features;

  • Set-up menus for operational parameters
  • Display and Monitoring:
    • 4 channel chart display with selectable items
    • Spectral waterfall excellent for highlighting
    • Navigation track with ‘breadcrumb’ trail
    • Contour plot
    • Mapping displays with selectable data overlays.
    • Nuclide identification
    • Alarm capability


Channels 1024
Differential nonlinearity < 0.2% over top 99.5%
Integral nonlinearity < 0.01% over top 99.5%
Zero dead time1
Baseline restoration Digital (IPBR)2
Pulse shaping Digital (AOPS)3
Pile-up rejection Digital(<40nS)
Pile-up contamination < 1% @ 250Kcps
Sample rate 0.1-10 sec-1
Internal/External Gain stabilisation
Automatic multi-peak
I/O Ethernet
RS-232 19200-115200 bit/s bit/s
USB memory stick
Composite spectrum
Individual spectra
State of health
Detector configuration
Operational parameters
Trigger Signal
Calibration data
Gamma Detector
RSX-1 4L Nal(TI)
RSX-3×3 0.4L Nal(TI)
Energy resolution <8.5%4
Neutron Detector
Tube size
2” dia x 32” active length 3He
Tube pressure
2.7 atm (no transportation limits)
Medium moderated for optimum performance
RSX-1 & RSX 3×3
9-40 VDC, 6W
RS-701 Console
22.7 kg
RSX 3×3
6.8 kg
RS-701 Console
6.8 kg
27 kg
Rooftop Carrier
9 kg
731 mm x 162 mm x 172 mm
381 mm x 101 mm x 101 mm
1,176 mm x 177 mm x 177 mm
RS-701 Console
233 mm x 112 mm x 198 mm)
Operating Temperature
-30°C to +45°C

  1. The RS-700 has no dead time in a traditional sense. A live time clock will be adjusted for loss of system measured pile-up rejections to give an apparent dead time to ensure the absolute count rate is correct.
  2. IPBR – Individual Pulse Baseline Restoration. The baseline is established for each individual pulse for maximum pulse height accuracy.
  3. AOPS – Automatic Optimised Pulse Shaping. Pulses are continuously analysed and the signal pulse shaping adjusted for optimum performance.
  4. Stated energy resolution is for new systems. Refurbished system performance depends on quality of Xtals supplied.

Product Brochure
Product Brochure