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Laser activated micro accelerator platform

An accelerator and platform technology, applied in the field of ionizing radiation sources, can solve problems such as long irradiation time and loss of radiation intensity

Inactive Publication Date: 2010-03-31
RGT UNIV OF CALIFORNIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a substantial loss of radiation intensity due to reflections that result in longer exposure times for the lowest therapeutic radiation

Method used

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  • Laser activated micro accelerator platform
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Embodiment 1

[0079]To illustrate the functionality of microparticle accelerators, structures capable of generating and accelerating electron beams at energies of 1 to 2 MeV with resonant laser dynamics measuring 1 mm or less in each dimension were evaluated. The accelerator structure has a pair of parallel dielectric plates separated by a narrow vacuum gap and bounded above and below by reflective layer(s). The total length of the plate is 1 mm and has about 1600 structural periods. Periodic grooves in the reflector serve to provide a means of coupling radiation into the gap and also serve to enhance the longitudinal period within the field of the structure. The dimensions of the structure (vacuum gap and dielectric thickness) are chosen such that the structure resonates at the laser frequency such that the field mode is controlled by a longitudinal standing wave with phase velocity (c). It has been demonstrated that the accelerating field is usually 4 to 10 times larger than the incident...

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Abstract

A resonant laser powered micro accelerator platform capable of producing relativistic or near relativistic electrons and, optionally, x-rays. The apparatus has a pair of parallel slab-symmetric dielectric slabs that are separated by a narrow vacuum gap that is preferably tapered. The slabs have a top surface with reflective layers with many periodic slots creating longitudinal periodicity in the structure fields when laser light is directed on the reflectors in one embodiment. Electrons introduced into the gap are accelerated along the length of the slabs. The reflective surface of the slabs is preferably a laminate of alternating layers of high index and low index of refraction materials.

Description

[0001] Cross References to Related Applications [0001] This application claims priority to US Provisional Application No. 60 / 910,090, filed April 4, 2007, which is hereby incorporated by reference in its entirety. Statement on Federally Funded Research and Development [0002] This invention was made with Government support under Grant No. DE-FG03-92ER40693 awarded by the Department of Energy. The government has certain rights in this invention. Incorporated references to submissions on CD-ROM [0003] Not applicable. technical field [0004] The present invention relates generally to sources of ionizing radiation, and more particularly to a complete miniature laser-actuated electron accelerator platform for generating relativistic and near-relativistic electrons or bremsstrahlung X-rays. The ionizing radiation produced by the device and its small size make the device of the present invention particularly suitable for minimally invasive laser endoscopic clinical proced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21K1/06
CPCH01J35/32H05G2/00H01J35/14H01J2235/164H05H15/00A61N2005/1088G21K1/06
Inventor 吉尔·特拉维施罗德尼·B·约德詹姆斯·罗森茨韦格
Owner RGT UNIV OF CALIFORNIA