XR-100T-CdTe Additional Spectra and Typical Performance

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XR-100T-CdTe Additional Spectra, Typical Performance, and Modeling Information

All spectra taken with Risetime Discrimination (RTD) and the MCA8000A Multichannel Analyzer.

Typical Countrate of XR-100T-CdTe 3x3x1 mm³ (5x5x1 mm³) from Selected Nuclides
Nuclide	Activity	Radiation Level on Contact (mR/hr)	Countrate on Contact (CPS)	Radiation Level at 10 cm away (mR/hr)	Countrate at 10 cm away (CPS)
¹³⁷Cs	0.1 mCi (3.7 MBq)	25	500 (1,400)	2.0	11 (30)
⁵⁷Co	0.1 mCi (3.7 MBq)	10	5,500 (15,000)	0.5	50 (140)
Uranium Oxide (Natural UO3)	0.6 mCi (21 MBq)	1	22 (60)	0.3	5 (15)
²⁴¹Am	10 µCi (0.37 MBq)	10	1,400 (3,800)	0.5	20 (50)

Please refer to the TO-8 diagram at the top of the XR-100T-CdTe page.

The TO-8 cover is made of Ni, 14 mm diameter, 0.250 mm thick.
The Detector element is located 1.5 mm behind the 250 µm or 100 µm thick Be window. (*)
The detector cavity is filled with dry nitrogen, N.
The size of the detector is either 3x3x1 mm³ or 5x5x1 mm³. (*)
The top contact is Pt of 1 µm thickness (- side).
The bottom contact is In of 1 µm thick (+ side).
The detector is placed on a ceramic substrate of 0.75 mm thickness.
The thickness of the cooler is 2.75 mm.
The base of the TO-8 package is made of steel (Kovar), 1.5 mm thick.

(*) Depending on which options are selected.

Typical Kovar Composition

Do NOT use RTD when trying to compare theoretical results to actual measurements.

The following applications notes may be useful when modeling the XR-100T-CdTe response

Revised November 5, 2002