High resolution hard x-ray spectroscopy of femtosecond laser-produced plasmas with a CZT detector
نویسندگان
چکیده
منابع مشابه
High resolution hard x-ray spectroscopy of femtosecond laser-produced plasmas with a CZT detector
We present measurement of characteristic Ka emission from Mo, Ag, and La targets irradiated by a 60 fs, 600 mJ, 10 Hz Ti:sapphire laser pulse at 10– 10 W/cm. These x-ray emissions can potentially be used in applications from laser-based hard x-ray sources to x-ray mammography so detailed knowledge of the spectra is required to assess imaging of the figure of merit. We show here that high resolv...
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Hard x-ray emission in the energy range of 30–300 keV from copper plasmas produced by 100-fs, 806-nm laser pulses at intensities in the range of 10210 W cm is investigated. We demonstrate that surface roughness of the targets overrides the role of polarization state in the coupling of light to the plasma. We further show that surface roughness has a significant role in enhancing the x-ray emiss...
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In this article, we describe the setup and application of a system for the spatial characterization of laser-produced plasma x-ray sources. While pinhole cameras are normally used for this purpose, we employed a zone plate to act as the x-ray lens. Together with an x-ray CCD camera as the detector, a spatial resolution of up to 2 μm was achieved. Due to the wavelength-dependent focal length of ...
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X-ray polarization spectroscopy was studied to derive directly the velocity distribution function (VDF) of hot electrons propagating in plasma created with a high intensity laser pulse. Polarization measurement was made at around 10 W/cm using a laser pulse (~10 J in ~1 ps) from Alisé facility at CEA/CESTA. Chlorinated triple-layer targets were irradiated, and Cl He line was observed with an x-...
متن کاملMev X rays and photoneutrons from femtosecond laser-produced plasmas.
We demonstrate a novel method to monitor the total angular distribution of the spectrum of hard x-ray emission from a plasma generated with femtosecond laser pulses with an intensity of 5 x 10(18) W/cm2 on a solid target. Measured and calculated angular distributions of x rays show a pronounced anisotropy for MeV photon energies. We complemented the spectral information by demonstrating a (gamm...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2003
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1628824