HERMES GSU

Portable gamma spectrometry

A field-deployable system for rapid gamma-spectrometric analysis of environmental samples.

Detector type
2 × 2 inch NaI(Tl), SiPM1
Energy range
30 keV–3 MeV2
Typical energy resolution, Cs-137
Below 7.5%2

Specifications checked against the manufacturer’s documents on 2026-10-16

Manufacturer’s product page (opens in a new tab)

Overview

Key features

  • Designed for rapid on-site analysis.
  • For characterization of environmental samples.
  • Part of ELSE NUCLEAR portable response systems.

Specifications

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

Detector

Detector type2 × 2 inch NaI(Tl), SiPM1
Sample geometry500 ml Marinelli2

Performance

Typical energy resolution, Cs-137Below 7.5%2

Measuring range

Energy range30 keV–3 MeV2
Maximum activity concentrationUp to 1 MBq/kg1

Electronics & signal

Spectrum channels20482

Software & data

Nuclide libraryMore than 30 isotopes; editable2

Mechanical

Overall dimensions51.8 × 30.5 × 44.5 cm2
Total weightLess than 22 kg2

Environment & ratings

Detector operating temperature−20 to +50 °C2
IP ratingIP67 during transport with closed lid; IP65 in operating setup2

General

Lead shielding10 mm2

The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.

Sources

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

  1. 1
    Publisher: ELSE NUCLEARProduct page product page Checked 2026-10-16
  2. 2
    Publisher: ELSE NUCLEARDatasheet p. 2; p. 1; p. 1–2 Checked 2026-10-16
FREE-AND 16
ELSE NUCLEAR

FREE-AND 16

Spectrometric station with 16 NaI(Tl) for waste characterisation

Detector type
16 NaI(Tl) 3 × 3 in crystals with PMT and MCA, eight on each side in two arrays
9 referenced values
AURAS 3000
ELSE NUCLEAR

AURAS 3000

Free-release assay of large waste containers with up to four HPGe

Energy range
HPGe: 30 keV–7 MeV
Energy resolution at 1.33 MeV
HPGe: ≤2.3 keV FWHM for ⁶⁰Co (1332.5 keV)
Relative efficiency
15–150% (nitrogen-cooled), 50–150% (electro-cooled)
13 referenced values
ARCHIMEDES III
ELSE NUCLEAR

ARCHIMEDES III

Portal monitor for excavation materials in boxes and containers

Detector type
Four plastic scintillators 100 × 50 × 5 cm
Active area
5000 cm² per detector; two pairs mounted on the sides of the portal
Energy range
35 keV–2 MeV
8 referenced values
ADAMOS
ELSE NUCLEAR

ADAMOS

Automated segmented gamma scanning of waste drums

Energy range
HPGe: 30 keV–7 MeV
Energy resolution at 1.33 MeV
HPGe: ≤2.3 keV FWHM for ⁶⁰Co (1332.5 keV)
Relative efficiency
15–150% (nitrogen-cooled), 50–150% (electro-cooled)
13 referenced values
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