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Experimental and numerical study of ultra-short laser-produced collimated Cu K α X-ray source

  • R. Rathore (a1), V. Arora (a1), H. Singhal (a1), T. Mandal (a1) (a2), J.A. Chakera (a1) (a2) and P.A. Naik (a1) (a2)...

Abstract

K α X-ray sources generated from the interaction of ultra-short laser pulses with solids are compact and low-cost source of ultra-short quasi-monochromatic X-rays compared with synchrotron radiation source. Development of collimated ultra-short K α X-ray source by the interaction of 45 fs Ti:sapphire laser pulse with Cu wire target is presented in this paper. A study of the K α source with laser parameters such as energy and pulse duration was carried out. The observed K α X-ray photon flux was ~2.7 × 108 photons/shot at the laser intensity of ~2.8 × 1017 W cm−2. A model was developed to analyze the observed results. The K α radiation was coupled to a polycapillary collimator to generate a collimated low divergence (0.8 mrad) X-ray beam. Such sources are useful for time-resolved X-ray diffraction and imaging studies.

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Corresponding author

*Address correspondence and reprint requests to: R. Rathore, Laser Plasma Section, Raja Ramanna Centre for Advanced Technology, Indore 452013 MP, India. E-mail: ranjana@rrcat.gov.in

References

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Keywords

Experimental and numerical study of ultra-short laser-produced collimated Cu K α X-ray source

  • R. Rathore (a1), V. Arora (a1), H. Singhal (a1), T. Mandal (a1) (a2), J.A. Chakera (a1) (a2) and P.A. Naik (a1) (a2)...

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