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DIS-1 – Direct Ion Storage Dosimeter For Hp(10) and Hp(0.07)

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The DIS-1 personal dosimeter is based on an ionization chamber combined with a modern electronic Direct Ion Storage (DIS) memory cell. The dosimeter is approved by the Swedish radiation authorities to measure doses to the legal national dose registry.

The DIS-1 dosimeter could be described as a passive electronic OSL, TLD or Film badge, which can be read instantly and non-destructively without any loss of dose information. This unique feature allows the user of the DIS-1 to read accumulated doses whenever necessary. The DIS-1 dosimeter has a small, lightweight, rugged and watertight construction.

The radiological range of the DIS-1 covers the entire Hp(10) and Hp(0.07) photon from 10 keV and beta energies without any compromises. The wide dose and energy range, the ability to operate in pulsed fields and the performance at high dose rates make DIS-1 an ideal device for all kinds of radiation dosimetry applications. The DIS-1 allows for the detection of heavy, high-energy ions and its immunity to any external interference is unequalled. There are no deviations in the dose readings even at very high EM or RF fields.


Ota yhteyttä

Stefan Mårtensson


Tekniset tiedot

Detectors: three TMDIS (Direct Ion Storage) detectors and two MOSFET detectors
Detect: Gamma, X-ray and Beta radiation
Cross-over: insensitive to neutrons (<5 %)
Dose instant readout of ICRU dose equivalents:
– Hp(10) 1 µSv to 40 Sv
– Hp(0.07) 10 µSv to 40 Sv
Calibration accuracy:
±5 % at 1 mSv (662 keV) Hp(10)
±10 % at 10 mSv (662 keV) Hp(0.07)
Energy response photons up to 1 Sv
– Hp(10) ±30 % from 15 keV to 9 MeV
– Hp(0.07) ±30 % from 6 keV (to 9 MeV)
Energy response beta
– Hp(0.07) -20…+35% from 0.24 MeV to 0.80 MeV (E mean)
Angular response for photons:
– Hp(10) ±20 % up to 60° at 65 keV
– Hp(0.07) ±20 % up to 60° at 65 keV
Size: Dosimeter 41 x 44 x 12 mm, with holder 47 x 49 x 13 mm
Weight: 25 g, with holder 43 g
Beta window: aluminized PI (app. 7 mg/cm²)
Holder: anodized aluminium
Temperature range from – 10°C to +50 °C
Enclosure class: IP 67

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