M-L band x-rays (3-3.5 KeV) from palladium coated targets for isochoric radiative heating of thin foil samples
Data(s) |
25/09/2015
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Resumo |
We describe experiments designed to produce a bright M-L band x-ray source in the 3-3.5 keV region. Palladium targets irradiated with a 10(15) W cm(-2) laser pulse have previously been shown to convert up to similar to 2% of the laser energy into M-L band x-rays with similar pulse duration to that of the incident laser. This x-ray emission is further characterized here, including pulse duration and source size measurements, and a higher conversion efficiency than previously achieved is demonstrated (similar to 4%) using more energetic and longer duration laser pulses (200 ps). The emission near the aluminium K-edge (1.465-1.550 keV) is also reported for similar conditions, along with the successful suppression of such lower band x-rays using a CH coating on the rear side of the target. The possibility of using the source to radiatively heat a thin aluminium foil sample to uniform warm dense matter conditions is discussed. |
Identificador |
http://dx.doi.org/10.1088/0953-4075/48/22/224002 http://pure.qub.ac.uk/ws/files/31962816/BKettle_PdEmission_accepted.pdf |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/openAccess |
Fonte |
Kettle , B , Dzelzainis , T , White , S , Li , L , Rigby , A , Spindloe , C , Notley , M , Heathcote , R , Lewis , C L S & Riley , D 2015 , ' M-L band x-rays (3-3.5 KeV) from palladium coated targets for isochoric radiative heating of thin foil samples ' Journal of Physics B: Atomic Molecular and Optical Physics , vol 48 , no. 22 , 224002 . DOI: 10.1088/0953-4075/48/22/224002 |
Tipo |
article |
Formato |
application/pdf |