Experimental and numerical study of ultra-short laser-produced collimated Cu Kα X-ray source. (3rd July 2017)

• Record Type: Journal Article
• Authors: Rathore, R.; Arora, V.; Singhal, H.; Mandal, T.; Chakera, J.A.; Naik, P.A.
• Is Part Of: Laser and particle beams. Volume 35:Number 3(2017)
• Page Start: 442
• Page End: 449
• Publication Date: 2017-07-03
• Subjects: X-ray diffraction, -- X-ray optics, -- X-ray sources from laser–plasma interactions; Laser beams -- Periodicals; Particle beams -- Periodicals; 535.5
• DOI: 10.1017/S026303461700043X
• Languages: English
• ISSNs: 0263-0346

Abstract

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 × 10 8 photons/shot at the laser intensity of ~2.8 × 10 17 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.