The Tel‐X‐Ometer enables X‐Ray investigations to be carried out in the normal school laboratory
Extensive safety precautions are built into the apparatus, which conforms completely to the recommendations of the International Commission on Radiological Protection, 1968
Schools should check CLEAPSS guide L93 Ionising Radiations and Radioactive Substances before purchase
The radiation level at 50mm from any part of the surface of the instrument does not exceed 0.5mR per hour
Also, in accordance with the recommendations laid down, a warning card is supplied with each instrument for affixing to the door of the room where the experiments are to be conducted
The apparatus is in effect an X‐ray spectrometer which, by means of simple adaptations, will fulfil a range of requirements as follows:A broad beam of X‐rays for analysis of their general properties
Single crystal Bragg Diffractometer having a scale accuracy of 5 minutes of arc
Powder Camera for Debye/Scherrer experiments to an accuracy of 30 minutes of arc
Fluorescent radiation emitter for a study of the Moseley Theory
An experimental region for the mounting of innovative studies of the teachers choice
A specially designed miniature X‐ray tube is used which protrudes through the cast aluminium base of the spectrometer table and is enclosed within a thick walled lead glass dome
The apparatus is supplied with the X‐ray tube installed and aligned for immediate use
Every instrument is carefully checked under working conditions before dispatch, in addition to thorough testing of the X‐ray tube itself
Mains power is supplied via 2m of 3‐core cable and a sector enables the instrument to operate on voltages between 110 and 240, at 50 to 60Hz
A detailed instruction book is provided giving set‐up details, notes for twenty‐five experiments (using the accessory set which is available separately ‐ B8R06807) and teacher's notes
Technical Specifications:X‐Ray Tube:Anode Voltage: 20/30kV selectable with electronic stabilisation
Emitter Current: 0‐80µA continuously adjustable with electronic stabilisation
Radiation Dosage: <0.1mrem/h ¯¹ at 0.1m from accessible surface
