The direct-reading electronic personal dosemeters
presently available on the market, show a dependence of the display on the energy of the incident neutron radiation, which is unsatisfactory. Investigations at the PTB have shown that the energy dependence of the neutron response can be improved. For this purpose, a silicon semiconductor detector with special converters and absorbers for neutron detection and linear combination of the pulse height signals of this detector is sufficient. When the pulse height signals are used in another area of the pulse height spectrum, it is also possible to determine the dose equivalent for photons. This offers the possibility of building a moderately priced direct-reading personal dosemeter for mixed neutron/photon fields. A battery-operated prototype with low-power microelectronics is at present being developed.
Literature:
Luszik-Bhadra, M. A Prototype Personal Neutron Dosemeter with one Silicon Diode. Contribution to European Workshop on Individual Monitoring of External Radiation, 4-6 September 2000, Helsinki, Radiat. Prot. Dosim. (in print).
Luszik-Bhadra, M. Individual Monitoring in Mixed Neutron/Photon Fields using a Single Silicon Detector. Contribution to the 13th International Conference on Solid State Dosimetry, 9.13 Juli 2001, Athen, Radiat. Prot. Dosim. (submitted).
Contact
Dr. Marlies Luszik-Bhadra
Phone: +49 (0) 531-592-6520
e-mail: Marlies.Luszik-Bhadra@ptb.de
