The ICRU and ICRP have made available for public consultation and comments a Draft of their Joint Report “Operational Quantities for External Radiation Exposure”. The upcoming recommendations resemble the older Maximum Dose Equivalent (MADE) as they are based on maximum values of protection quantities, effective dose, absorbed dose in the lens of the eye, and absorbed dose in local skin, calculated for broad parallel beams incident on the body. These upcoming quantities are discussed with regards to various neutron dosimeters, particularly those developed by our group: superheated emulsions and thin polymer films. The latter are quite innovative as they can be shaped in the form of gloves for the measurement of extremity doses from mixed fields of gammas and neutrons such as those encountered in several phases of the nuclear fuel cycle. While attempts have been made to develop extremity dosimeters for neutrons based on track etch detectors, the detector chips in these devices interfere with the tactile sense of the operators. For this reason, we are developing extremely thin and flexible polymer films loaded with neutron sensitive luminescent materials. These films may also allow the measurement of neutron doses to the skin of melanoma patients treated with Boron Neutron Capture Therapy.
Recent developments in neutron dosimetry requirements and techniques
F. d’Errico;R. Ciolini;L. Lazzeri
2017-01-01
Abstract
The ICRU and ICRP have made available for public consultation and comments a Draft of their Joint Report “Operational Quantities for External Radiation Exposure”. The upcoming recommendations resemble the older Maximum Dose Equivalent (MADE) as they are based on maximum values of protection quantities, effective dose, absorbed dose in the lens of the eye, and absorbed dose in local skin, calculated for broad parallel beams incident on the body. These upcoming quantities are discussed with regards to various neutron dosimeters, particularly those developed by our group: superheated emulsions and thin polymer films. The latter are quite innovative as they can be shaped in the form of gloves for the measurement of extremity doses from mixed fields of gammas and neutrons such as those encountered in several phases of the nuclear fuel cycle. While attempts have been made to develop extremity dosimeters for neutrons based on track etch detectors, the detector chips in these devices interfere with the tactile sense of the operators. For this reason, we are developing extremely thin and flexible polymer films loaded with neutron sensitive luminescent materials. These films may also allow the measurement of neutron doses to the skin of melanoma patients treated with Boron Neutron Capture Therapy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
