نتایج جستجو برای: photoneutron

تعداد نتایج: 134  

Journal: :journal of biomedical physics and engineering 0
n mohammadi s h miri-hakimabad l rafat-motavalli

background: high-energy linear accelerator (linac) is a valuable tool and the most commonly device for external beam radiation treatments in cancer patients. in the linac head, high-energy photons with energies above the threshold of interaction produce photoneutrons. these photoneutrons deliver the extra dose to the patients in the planning treatment and increase the risk of secondary cancer. ...

Asra Sadat Talebi Majid Jadidi Payman Hejazi Raheb Ghorbani

Medical linear accelerators are one of the most widespread methods for cancer treatment. Despite their advantages, unwanted photoneutrons are produced by high energy linacs. This photoneutrons are as undesired doses to patients and a significant problem for radiation protection of the staffs and patients. Photoneutrons radiological risk must be evaluated because of their high LET and range.in o...

Journal: :international journal of advanced biological and biomedical research 0
asra sadat talebi m.sc graduated of medical physics, department of medical physics, semnan university of medical sciences, semnan, iran payman hejazi assistant professor, department of medical physics, semnan university of medical sciences, semnan, iran majid jadidi associate professor, department of medical physics, semnan university of medical sciences, semnan, iran raheb ghorbani professor, head of social determinants of health research center, semnan university of medical sciences, semnan, iran

medical linear accelerators are one of the most widespread methods for cancer treatment. despite their advantages, unwanted photoneutrons are produced by high energy linacs. this photoneutrons are as undesired doses to patients and a significant problem for radiation protection of the staffs and patients. photoneutrons radiological risk must be evaluated because of their high let and range.in o...

Asra Sadat Talebi Majid Jadidi Payman Hejazi Raheb Ghorbani

Medical linear accelerators are one of the most widespread methods for cancer treatment. Despite their advantages, unwanted photoneutrons are produced by high energy linacs. This photoneutrons are as undesired doses to patients and a significant problem for radiation protection of the staffs and patients. Photoneutrons radiological risk must be evaluated because of their high LET and range.in o...

Journal: :Physical Review Letters 1963

Journal: :The Journal of the Korea Contents Association 2015

Journal: :Physical review letters 2000
Santala Zepf Watts Beg Clark Tatarakis Krushelnick Dangor McCanny Spencer Singhal Ledingham Wilks Machacek Wark Allott Clarke Norreys

The angular distribution of bremsstrahlung gamma rays produced by fast electrons accelerated in relativistic laser-solid interaction has been studied by photoneutron activation in copper. We show that the gamma-ray beam moves from the target normal to the direction of the k(laser) vector as the scale length is increased. Similar behavior is found also in 2D particle-in-cell simulations.

2004
J. C. Liu W. R. Nelson

CALCULATIONS OF THE GIANT-DIPOLE-RESONANCE PHOTONEUTRONS USING A COUPLED EGS4-MORSE CODE J. C. Liu, W. R. Nelson, K. R. Kase and X. S. Mao Stanford Linear Accelerator Center, P. 0. Box 4349, Stanford, CA 94309 Abstract The production and transport of the photoneutrons from the giant-dipoleresonance reaction have been implemented in a coupled EGS4-MORSE code. The total neutron yield (including b...

Journal: :Australian Journal of Physics 1981

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