Neutron beam control devices

Neutron Optical Devices of Pnpi

Presently different optical devices are used practically at all modern neutron sources to form neutron beams. The basic event in forming neutron optics at PNPI was creation of highly efficient polarizing mirror on the glass substrate in 1972 [1,2]. It had a polarizing Ñî 60 Fe 40 coating and an antireflective Ti 85 Gd 15 underlayer. The coatings were prepared by vacuum thermal evaporation of ma...

Clinical Policy Bulletin: Proton Beam and Neutron Beam Radiotherapy

Epithermal Neutron Beam Generator Design for Bnct

BNCT is a radiotherapy modality based on the neutron capture and fission reactions that occur when boron-10 is irradiated by thermal neutrons. This reaction generates alpha and lithium that produce high density of ionizations in close to the reaction site. The concept provides high absorbed doses into the cancerous cells preserving the adjacent healthy tissues. Nowadays, the available neutron s...

Neutron spin manipulation devices using YBCO films

The Meissner effect in a thin-film superconductor can be used to create a sharp boundary between regions of different magnetic field and hence can be used as a component of neutron spin manipulation devices. We have developed two cryogenic neutron spin manipulation devices using single-crystal, high-Tc, YBCO films, which can be cooled without using liquid cryogens and eliminate small angle scat...

Quality Control Assessment of Conventional Radiology Devices in Iran

Introduction Quality control (QC) techniques are used in monitoring and maintenance of the components of an x-ray system. QC of radiology devices plays a significant role in reduction of medication dose and optimization of image quality. This study aimed to conduct QC tests on randomly selected radiology devices, installed in diagnostic imaging departments of Iran. Materials and Methods In tota...