Abstract：
:Monte Carlo calculations of the energy response of LiF dosemeters have been carried out to help resolve the discrepancy between the measurements of Holt, Edelstein and Clark (1975) and those of Paliwal and Almond (1975) and others. It is concluded that the assumptions used by Holt et al. are largely responsible. They assume, in converting energy deposition in an air-filled ionization chamber to energy deposition in water, that as electrons penetrate a medium they are monoenergetic and the energy is given by Harder's expression (ICRU 1972). The assumption gives poor results as the stopping power for electrons in air is strongly energy dependent, and the energy spectrum has been significantly broadened. The Monte Carlo calculations are also used to criticize the electron cavity theories of Almond and McCray (1970), Burlin, Snelling and Owen (1969) and Holt et al. (1975), and to suggest as an alternative a slightly modified version of the Bragg-Gray theorem.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
O'Brien Kdoi
10.1088/0031-9155/22/5/003subject
Has Abstractpub_date
1977-09-01 00:00:00pages
836-51issue
5eissn
0031-9155issn
1361-6560journal_volume
22pub_type
杂志文章abstract：:A recent paper proposed a novel technique for determining the total body water (TBW) of patients suffering with abnormal hydration levels, using a resonant cavity perturbation method. Current techniques to measure TBW are limited by resolution and technical constraints. However, this new method involves measuring the ...
journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/49/9/013
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/1361-6560/61/24/8762
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/56/11/002
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/52/16/020
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/1361-6560/ab3564
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/49/4/002
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/61/24/8476
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journal_title：Physics in medicine and biology
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journal_title：Physics in medicine and biology
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journal_title：Physics in medicine and biology
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/1361-6560/aab4b6
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/51/16/N02
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/53/24/011
更新日期：2008-12-21 00:00:00
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/1361-6560/aad58d
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/20/6/005
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journal_title：Physics in medicine and biology
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journal_title：Physics in medicine and biology
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journal_title：Physics in medicine and biology
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journal_title：Physics in medicine and biology
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
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journal_title：Physics in medicine and biology
pub_type： 杂志文章
doi：10.1088/0031-9155/58/21/7583
更新日期：2013-11-07 00:00:00
