Nanoparticles of have been irradiated by 48 MeV , 75 MeV , and 90 MeV ion beams with a fluence range of . The thermoluminescence (TL) glow curves along with the response curves of this nanophosphor have been investigated and compared with those of the corresponding microcrystalline samples. TL glow curve of the nanophosphor exposed to -rays has also been included in the letter with the aim of reporting some of the comparative measurements. The glow curves of the ion-beam irradiated nanomaterials are similar in their shapes to those induced by gamma rays, with a shift in the peak positions to the higher temperature side by around 30 K. The TL intensity of the ion-beam irradiated nanomaterials is found to decrease, while going from low to high atomic number ions (i.e., ). Similar trend was also observed in the linearity of the TL response curves. The response curve of Li ion irradiated nanomaterials is sublinear in the whole range of studied fluences. C ion has also a more or less similar response, while the O ion has a sublinear response over a shorter range of , and above this range the response saturates. These results for the nanomaterials are much better than that of the corresponding microcrystalline sample irradiated by ions. The curve was sublinear up to the fluence and then saturates at higher fluences. The wider sublinear TL response of the nanocrystalline makes it superior to its corresponding microform and thus makes it a suitable candidate as a dosimeter to be used for detecting the doses of ions, especially the Li and C ions for their application in cancer radiotherapy and radiation biology.
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1 August 2008
Research Article|
August 06 2008
Nanocrystalline for ion beams dosimetry
S. P. Lochab;
S. P. Lochab
a)
1
Inter-University Accelerator Centre
, Aruna Asaf Ali Marg, New Delhi-110067, India
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D. Kanjilal;
D. Kanjilal
1
Inter-University Accelerator Centre
, Aruna Asaf Ali Marg, New Delhi-110067, India
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Numan Salah;
Numan Salah
b)
2Center of Nanotechnology,
King Abdulaziz University
, Jeddah-21589, Saudi Arabia
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Sami S. Habib;
Sami S. Habib
2Center of Nanotechnology,
King Abdulaziz University
, Jeddah-21589, Saudi Arabia
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Jyoti Lochab;
Jyoti Lochab
3Radiotherapy Department,
Safdarjung Hospital
, New Delhi-110029, India
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Ranju Ranjan;
Ranju Ranjan
4Department of Physics and Astrophysics,
University of Delhi
, Delhi-110007, India
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V. E. Aleynikov;
V. E. Aleynikov
5
Joint Institute for Nuclear Research
, Dubna 141980, Russia
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A. A. Rupasov;
A. A. Rupasov
6P. N. Lebedev Physical Institute,
Russian Academy of Sciences
, Leninsky Prosp. 53, Moscow 117924, Russia
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A. Pandey
A. Pandey
7Department of Physics, Sri Venkateswara College,
University of Delhi
, Benito Juarez Road, Dhaula Kuan, New Delhi-110021, India
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a)
Electronic mail: lochab@iuac.res.in and spl4255@yahoo.co.in.
b)
Electronic mail: nsalah@kau.edu.sa.
J. Appl. Phys. 104, 033520 (2008)
Article history
Received:
March 20 2008
Accepted:
May 06 2008
Citation
S. P. Lochab, D. Kanjilal, Numan Salah, Sami S. Habib, Jyoti Lochab, Ranju Ranjan, V. E. Aleynikov, A. A. Rupasov, A. Pandey; Nanocrystalline for ion beams dosimetry. J. Appl. Phys. 1 August 2008; 104 (3): 033520. https://doi.org/10.1063/1.2955459
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