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Correction factors for Fricke dosimetry in high-energy electron beams
| Content Provider | Scilit |
|---|---|
| Author | Ma, C. -M Nahum, A. E. |
| Copyright Year | 1993 |
| Description | Journal: Physics in Medicine & Biology The paper presents Fricke-to-water dose conversion and wall correction factors for Fricke ferrous sulphate dosimetry in high-energy electron beams. The dose conversion factor has been calculated as the ratio of the mean dose in water to the mean dose in the Fricke solution with a water-walled vessel and the wall correction factor accounts for the change in the Fricke dose due to the presence of the non-water wall material. The EGS4 (electron gamma shower version 4) Monte Carlo code system has been employed in the work together with the application of a correlated sampling variance reduction technique. The results show that for a Fricke dosimeter of 1.534 cm diameter and 5.5 cm length the dose conversion factor is nearly constant at 1.004 (within 0.1%) for electron energies of 11-25 MeV if the dosimeter is placed at the depth of maximum dose but can vary by a few per cent if the dosimeter is placed on the descending portion of the depth-dose curve. |
| Related Links | http://iopscience.iop.org/article/10.1088/0031-9155/38/3/009/pdf |
| Ending Page | 438 |
| Page Count | 16 |
| Starting Page | 423 |
| ISSN | 00319155 |
| e-ISSN | 13616560 |
| DOI | 10.1088/0031-9155/38/3/009 |
| Journal | Physics in Medicine & Biology |
| Issue Number | 3 |
| Volume Number | 38 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1993-03-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Physics in Medicine & Biology Nuclear Energy and Engineering Monte Carlo Electron Beam |
| Content Type | Text |
| Resource Type | Article |
| Subject | Radiology, Nuclear Medicine and Imaging Radiological and Ultrasound Technology |
