نتایج جستجو برای: photoneutron contamination
تعداد نتایج: 53008 فیلتر نتایج به سال:
Detection of several targets (U, Be , D 2 O) interest to national security has been achieved at Purdue University’s 6 MV X-ray clinical linear accelerator (CLINAC), from photoneutron/fission induced neutron signatures using a Centrifugally Tensioned Metastable Fluid Detector (CTMFD). Traditional detection schemes were saturated and ineffective under the intense (to ∼ 10 4 R/h) photon environmen...
background: radiation therapy uses high-energy radiation to kill cancer cells. photoneutron contamination and induced radioactivity of high energy therapeutic photon beams are considered as the main source of occupational exposure to radiation therapists who works with linear accelerators operating above 10 mv. materials and methods: the gamma dose rates were measured after termination of diff...
Some recent studies in Italy have focused on the possibility of exploiting clinical high energy electron linear accelerators, normally used in photon radiotherapy, as photo-neutrons source for in-hospital neutron medical applications. In-Hospital photo-neutron radiotherapy extends the possibilities of Boron Neutron Capture Therapy (BNCT) to external treatment of diffused tumors when other metho...
The dipole response of stable and unstable neutron-rich oxygen nuclei of masses A = 17 to A = 22 has been investigated experimentally utilizing electromagnetic excitation in heavy-ion collisions at beam energies about 600 MeV/nucleon. A kinematically complete measurement of the neutron decay channel in inelastic scattering of the secondary beam projectiles from a Pb target was performed. Differ...
Scatterometer Contamination Mitigation
We study mutual dissociation of heavy nuclei in peripheral collisions at ultrarelativistic energies. Earlier this process was proposed for beam luminosity monitoring via simultaneous registration of forward and backward neutrons in zero degree calorimeters at Relativistic Heavy Ion Collider. Electromagnetic dissociation of heavy ions is considered in the framework of the Weizsäcker-Williams met...
Background: Radiation therapy uses high-energy radiation to kill cancer cells. Photoneutron contamination and induced radioactivity of high energy therapeutic photon beams are considered as the main source of occupational exposure to radiation therapists who works with linear accelerators operating above 10 MV. Materials and Methods: The gamma dose rates were measured after termination of...
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