Development of personal neutron dosemeters at the PTB and first measurements in the space station MIR.
A passive neutron dosemeter with thermoluminescence and etched-track detectors was used in the space station MIR in 1995 and 1997 and during some shuttle flights to MIR. High neutron doses of about 200 microSv d-1 were measured with track detectors, while the contribution of protons to the track density was estimated to be small. An active personal dosemeter based on silicon diodes providing a direct readout, improved sensitivity and spectrometric properties is proposed for additional monitoring. Firstly, measurements with a prototype were performed in the stray radiation fields of the CERN-EU Reference Radiation Facility. When mounted on a phantom at different positions, both the passive and the active dosemeter provide the directional distribution of neutrons via an unfolding procedure. This can be helpful for a better understanding of the complex radiation field in space and for comparisons with calculations.
Luszik-Bhadra
M
M
Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany. marlies.luszik-bhadra@ptb.de
Matzke
M
M
Schuhmacher
H
H
D002138:Calibration; D005118:Extraterrestrial Environment; D005214:Fast Neutrons; D005373:Film Dosimetry / Q000295:instrumentation*; D006801:Humans; D009502:Neutrons; D019047:Phantoms, Imaging; D011092:Polyethylene Glycols; D011829:Radiation Dosage; D012825:Silicon; D013026:Space Flight / Q000295:instrumentation*; D018531:Spacecraft; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation*
C028827:CR 39; D011092:Polyethylene Glycols; D012825:Silicon