摘要:
The present application is directed to various embodiments of laser systems which include a laser oscillator and a pump source configured to produce coherent light at high repetition rates and with short pulse durations, wherein the output from the laser oscillator is then amplified in a laser amplifier, which includes a pump source, the output from the laser amplifier has increased average and peak power, but preserves the short pulse duration and high repetition rate of the laser oscillator.
摘要:
The present invention provides a detector for use in medical and industrial applications for detecting high energy radiation, especially for use in tomotherapy and other image-guided radiotherapy systems. The detector is preferably housed in an enclosure. A plurality of detector elements are installed within the enclosure. The detector elements preferably include a substrate, a readout electrode layer deposited on at least one surface of the substrate, an amorphous selenium layer deposited on at least one surface of the readout electrode layer, and a high voltage electrode layer deposited on at least one surface of the amorphous selenium layer.
摘要:
An optical system includes a laser oscillator or a laser amplifier. The optical system includes a gain medium that is optically coupled to a pump source. A solid cooling element is in physical contact with, but not bonded to, a cooling surface of the gain medium. A mounting apparatus holds the solid cooling element to the gain medium. In a preferred embodiment the gain medium is a thin disk gain medium and the solid cooling-element is made from CVD-diamond.
摘要:
A technique to enhance the yield of atomic ion species (H.sup.+, D.sup.+, O.sup.+, N.sup.+, etc.) from plasma ion sources. The technique involves the addition of catalyzing agents to the ion discharge. Effective catalysts include H.sub.2 O, D.sub.2 O, O.sub.2, and SF.sub.6, among others, with the most effective being water (H.sub.2 O) and deuterated water (D.sub.2 O). This technique has been developed at Argonne National Laboratory, where microwave generated plasmas have produced ion beams comprised of close to 100% purity protons (H.sup.+) and close to 100% purity deuterons (D.sup.+). The technique also increases the total yield of protons and deuterons by converting unwanted ion species, namely, H.sub.2.sup.+,H.sub.3.sup.+ and D.sub.2.sup.+, D.sub.3.sup.+, into the desired ion species, H.sup.+ and D.sup.+, respectively.
摘要:
This invention relates to an integrated process for the efficient production of olefins from C4 feedstocks comprising butane and more particularly to a method of producing propylene and butadiene. The process combines a dehydrogenation unit with an olefin conversion unit to convert butane feedstock to propylene and butadiene products. The combined catadiene-OCT process produces yields of propylene from normal butane in excess of 70%.
摘要:
This invention relates to an integrated process for the efficient production of olefins from C4 feedstocks comprising butane and more particularly to a method of producing propylene and butadiene. The process combines a dehydrogenation unit with an olefin conversion unit to convert butane feedstock to propylene and butadiene products. The combined catadiene-OCT process produces yields of propylene from normal butane in excess of 70%.
摘要:
A method of treating elevated plasma total homocysteine levels (tHc) in subjects with end stage renal disease (ESRD) is disclosed, said treatment comprising the administration of sodium 2-mercaptoethylsulfonate (MESNA) immediately prior to, or concurrently with, performing hemodialysis on said patient.
摘要:
A pulse width reduction apparatus for an optical system is disclosed and includes at least one birefringent optical element configured to selectively adjust a spectral modulation depth of an optical signal while leaving a spectral transmission function of the optical signal substantially constant
摘要:
An optical system includes a laser oscillator or a laser amplifier. The optical system includes a gain medium that is optically coupled to a pump source. A solid cooling element is in physical contact with a cooling surface of the gain medium. The gain medium and cooling element are held together using a low temperature contacting method. In a one embodiment the gain medium is a thin disk gain medium, the solid cooling-element is made from CVD-diamond, and the low temperature bonding technique is surface activated bonding.