A  New  Calculation  Method  for  Energy  Deposition  of  Photon

QIU  You-heng; YING  Yang-jun; WANG  Min; CHEN  Xing-liang

doi:10.11804/NuclPhysRev.28.01.097

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QIU You-heng, YING Yang-jun, WANG Min, CHEN Xing-liang. A New Calculation Method for Energy Deposition of Photon[J]. Nuclear Physics Review, 2011, 28(1): 97-102. doi: 10.11804/NuclPhysRev.28.01.097

Citation:

QIU You-heng, YING Yang-jun, WANG Min, CHEN Xing-liang. A New Calculation Method for Energy Deposition of Photon[J]. Nuclear Physics Review, 2011, 28(1): 97-102. doi: 10.11804/NuclPhysRev.28.01.097

A New Calculation Method for Energy Deposition of Photon

doi: 10.11804/NuclPhysRev.28.01.097

1 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China;2 Graduate School of China Academy of Engineering Physics, Beijing 100088, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2011-03-20

Abstract

Energy deposition distribution is very important to study radiotherapy or radioprotection. The *F8 method of MCNP program counts the energy loss of photon and electron together. Only real grid is allowed to *F8, so its computation efficiency is low. This paper gives a new calculation method for energy deposition of photon. Because the energy deposition of photon is accomplished by secondary electron, only electron is counted in the new method. The real collision of the electron is counted by the new method, whereas *F8 only counts the information of particle across the interface. Moreover, virtual grid is allowed in the new method. With real grid, the new method has the same precision and efficiency as *F8. If virtual grid is adopted by the new method, although the precision is slightly down, the efficiency is greatly increased.
- energy deposition,
- Xray,
- MonteCarlo simulation,
- radiotherapy
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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A New Calculation Method for Energy Deposition of Photon

doi: 10.11804/NuclPhysRev.28.01.097

1 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China;2 Graduate School of China Academy of Engineering Physics, Beijing 100088, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2011-03-20

Key words:

Abstract: Energy deposition distribution is very important to study radiotherapy or radioprotection. The *F8 method of MCNP program counts the energy loss of photon and electron together. Only real grid is allowed to *F8, so its computation efficiency is low. This paper gives a new calculation method for energy deposition of photon. Because the energy deposition of photon is accomplished by secondary electron, only electron is counted in the new method. The real collision of the electron is counted by the new method, whereas *F8 only counts the information of particle across the interface. Moreover, virtual grid is allowed in the new method. With real grid, the new method has the same precision and efficiency as *F8. If virtual grid is adopted by the new method, although the precision is slightly down, the efficiency is greatly increased.

QIU You-heng, YING Yang-jun, WANG Min, CHEN Xing-liang. A New Calculation Method for Energy Deposition of Photon[J]. Nuclear Physics Review, 2011, 28(1): 97-102. doi: 10.11804/NuclPhysRev.28.01.097

Citation:

QIU You-heng, YING Yang-jun, WANG Min, CHEN Xing-liang. A New Calculation Method for Energy Deposition of Photon[J]. Nuclear Physics Review, 2011, 28(1): 97-102. doi: 10.11804/NuclPhysRev.28.01.097