Accessories for the Risø TL/OSL reader

Radioactive ⁹⁰Sr/⁹⁰Y beta source: ⁹⁰Sr/⁹⁰Y ceramic source type SIFK, 1.48 GBq (40 mCi) to fit the Risø beta irradiator attachment.

Note: The ⁹⁰Sr beta source can also be ordered with other activities than the one listed above. Please contact us for a specific quote on this.)

11.65 mm diameter stainless steel sample cups or 9.7 mm diameter flat stainless steel discs.

11.65 mm diameter aluminium sample cups.

Special aluminium discs each containing 100 individual grain holes (⌀ = 300 µm).

Note: These discs can also be ordered with holes of other diameters than 300 µm. Please contact us for a specific quote on this.

Ultrasonic cleaner useable for treatment of single grain discs in order to release trapped grains from sample holes.

• Output tip vibration frequency: 30kHz +/- 3kHz
• Output half-excursion force: <2N
• Output primary tip vibration excursion: ≤100μm

Exchangeable sample holders (each designed to hold 48 samples) for 9.7 mm diam. flat sample discs or 11.65 mm diam. sample cups.

Linear, up to 10⁷ counts per second and low dark count EMI 9235QB15 PM tube.

Linear, up to 10⁷ counts per second and low dark count EMI 9235QB15 PM tube incl. housing.

One pcs. upgrade kit for amplifier updates for TL/OSL reader.

New and improved MiniSys for the TL/OSL dating system. The MiniSys is built around an industrial PC, with improved reliability.

Controller for the Risø Automated TL/OSL Dating System.

OSL card for the Controller of the TL/OSL-system.

XY PC card enabling the controller to operate the single grain attachment.

2 mm Schott BG-39
Band pass filter / short pass filter
Ionically colored glass

3 mm Schott BG-3
Band pass filter / short pass filter
Ionically colored glass

7,5 mm Hoya U-340.
Ultraviolet transmitting, visible absorbing filter.

One batch of Risø calibration quartz, ½g, 4.81Gy, 180-250 µm.

5 litres of LST Fastfloat consisting of low toxicity sodium heteropolytungstates dissolved in water. A high density liquid for laboratory based density separations, supplied at a density of 2.82 g/mL but capable of being used up to a density of 2.95 g/mL at 25 °C.

Conform to IS 649 (BS 718, DIN 12791, NF B 35511), Calibration temperature: 20 °C, Range: 1,200‐1,300 g/ml.

Rüsch Silkospray dual purpose silicone spray (500ml can).

Set containing of one base plate and two masks with holes of 2 mm and 8 mm diameter respectively.

Leybold DB4 vacuum pump with an AR 4-8 Exhaust filter.

Relay box for automatic software control of atmosphere in sample chamber.

One meter flexible steel tube to connect vacuum pump with TL/OSL unit.

Dose reduction kit consisting of rings and spacers which are inserted in between the source and the sample. It is possible to reduce the activity of the standard 1,48 GBq source by a factor 10 by means of the dose reduction kit.

Personal computer (Pentium 4 PC) with Windows and special application software installed, 19” monitor, UK keyboard, and printer.

Extra beta irradiator module useful when exchanging between multiple beta sources on the same reader. (Price is excl. of lead, bottom flange and helmet)

Extra lift and heating module for measuring at the irradiation position.

Combined Infrared/Blue Light stimulated luminescence (IRSL/OSL) unit attachable to the Risø TL sample changer for IRSL/OSL measurements of a variety of natural and artificial materials. The OSL unit is based on illumination with 1) clusters of 870 nm IR LEDs providing > 135 mW/cm² at the sample and 2) clusters of 470 nm blue LEDs delivering > 80 mW/cm² at the sample.

Clusters of green 525 nm LEDs can also be provided.

The power provided at the sample depends on the number of Green and IR LEDs chosen. (Please contact us for information on possible configurations available).

Old OSL units can be upgraded with new, and more powerful LEDs.This also applies for old OSL units with IR laser thereby making it compatible with the new DA-20 controller. Upgrade includes new glass filters and new feedback detectors in the OSL-unit.

You may choose between:

• Blue or IR LEDs Upgrade
• Full upgrade (Blue and IR LEDs)

Special IRSL/OSL unit enabling IR/Blue light stimulation of multiple grain samples. This special IRSL/OSL unit makes use of the same diodes and provides the same power intensities on the sample as the standard IRSL/OSL unit. But as it is designed to accommodate the single grain attachment as well, the light collection efficiency is reduced by approximately 40%.

Upgrade of electronics, valves and motors (incl new control circuit board and new DC motors inside the reader). This will enable two speed rotations, real temperature reading and the cable connections will be compatible with the new standard.