(b) STAND FOR G.M. DETECTOR TYPE SG 200

Stand for G.M. tube type SG 200 has been designed to hold end window G.M. tubes. This stand can be housed inside the lead shielding if required. It has both sample and absorber trays. The position of these trays can be adjusted from the end window of the detector. The stand made up of acrylic sheet is precisely milled for sliding-in of sample and absorber trays.

Sample tray is designed to hold planchets or disc type radioactive standard source ( Beta or Gamma). Aluminimum absorber discs can be interposed between the source and the detector for attenuating the radiation as seen by the detector.

This stand is an essential accessory for connecting end window G.M. tube to any of the G.M. counting systems manufactured by NUCLEONIX.For universities and colleges sliding bench type SB205 is recommended.

(c) Sliding bench Type : SB205

Sliding bench SB205 is designed specially for the purpose of mounting bench the G.M counter accessories for doing the experiments in a most convenient fashion. This essentially consists of a bench with sliding groves with a graduated S.S scale fixed on one side of it. Scale has graduations both in cm & inches upto 50cm/20 inches. There are three vertical sliding mounts, one for mounting of End Wndow G.M detector, Second is ‘Absorber Holder’ & Third is ‘Source Holder’ & source mounts. Each of these mounts can be positioned along the slide scale to have required distance between the end window to the source with absorber mount interposed in between. End window detector is housed in PVC enclosure with MHV socket fixed on to it.

(d) SOURCE KIT - 1 TYPE SK 210

Source Kit-1 type SK 210 offered by NUCLEONIX contains one each of Beta and Gamma sources. These are low active disc sources of the order of 2 to 10 micro curie for Gamma & Beta. Gamma source disc is evaporated and sealed on 25mm dia X 5mm thick plastic disc. Whereas Beta source disc is evaporated & sealed on 25mm X 10mm thick

plastic disc and covered with 10mg/ sq.cm aluminised mylar film. This source kit is an ideal choice along with G.M. counting system for educational institutions & Research labs. Source kit containing the disc sources is offered in an acrylic box of dimensions 86mm X 46mm X 25mm (approx).

(e) ALUMINIMUM ABSORBER SET TYPE AA 270

Aluminimum Absorber Set Type : AA 270 offered by NUCLEONIX consists of absorber discs in different thicknesses ranging from 20 to 300 mg/cm.sq. Each of these absorbers is mounted in an individual plastic frame, which exactly fits into the absorber tray of the G.M. stand.

The diameter of each disc is approximately 50 mm including the frame. There is identification number for each disc printed on it. A chart showing the identification number and thicknesses of the disc in grms per unit area is given in the absorber box which is made up of acrylic sheet. All these discs are housed in this acrylic box. This absorber set will be useful in studying the Beta absorption coefficient using G.M. Counting systems.