Abstract:
:GSI is operating a facility for the production of rare isotopes. Nuclei are produced by fragmentation or fission of the impinging heavy ions with energies of approximately 1 GeV per nucleon. The major part of the primary beam and the produced nuclei is deposited in the components of the Fragment Separator (FRS) and generates neutron radiation. Thermoluminescence dosemeters (TLDs) (6LiF/7LiF pairs in PE spheres) were exposed in neutron fields produced by uranium beams with energies between 100 and 1000 MeV per nucleon during an irradiation period in the year 2002. Two-dimensional dose distributions are obtained using these TL measurements in combination with model calculations. The applied model describes the dose distribution as a superposition of dose patterns of 20 single sources equally distributed along the FRS. The single source distribution is based on a measured double differential neutron distribution for a 1 GeV per nucleon uranium beam.
journal_name
Radiat Prot Dosimetryjournal_title
Radiation protection dosimetryauthors
Fehrenbacher G,Festag JGdoi
10.1093/rpd/nch210keywords:
subject
Has Abstractpub_date
2004-01-01 00:00:00pages
739-42issue
1-4eissn
0144-8420issn
1742-3406pii
110/1-4/739journal_volume
110pub_type
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