Please use this identifier to cite or link to this item:
Title: Intense Gigawatt relativistic electron beam generation studies in planar and cylindrical Diodes
Researcher: Roy, Amitava
Guide(s): Mittal, K C
Keywords: High Power Microwave
Virtual Cathode Oscillator (Vircator)
Cylindrical Diodes
Upload Date: 13-Sep-2012
University: Homi Bhabha National Institute
Completed Date: 24-04-2012
Abstract: Intense gigawatt relativistic electron beams (IREB) have found applications in the field of high-power microwave generation (HPM), free electron lasers, flash X-ray (FXR) generation, and surface modification etc. For all these applications, the intense electron beam is generated in field emission diode from the explosive emission cathode plasma. When the intense electron beam hits the anode, an anode plasma is produced. Space charge limited electron and ion emission occurs from these electrode plasmas. Movement of electrons, ions, electrode plasmas and the plasma uniformity controls various processes occurring in the high power vacuum diodes. Considerable experimental and theoretical work has been done in the study of beam generation processes but the information available is far from complete. An attempt has been made to understand the beam generation process under various diode configurations and also production of HPM from axial and coaxial virtual cathode oscillator using these beams. KALI 1000 and KALI 5000 (Kilo Ampere Linear Injector) pulse power system has been used to investigate the various aspects of IREB generation. KALI 5000 pulse power system has been operated without a prepulse switch to study the effect of prepulse generated plasma on IREB generation. The typical electron beam parameters studied were 200-450 keV, 10-40 kA, 100 ns with few hundreds of A/cm2 current density.
Pagination: 187p.
Appears in Departments:Department of Physical Sciences

Files in This Item:
File Description SizeFormat 
01_title.pdfAttached File66.01 kBAdobe PDFView/Open
02_certificate.pdf700.56 kBAdobe PDFView/Open
03_declaration.pdf55.6 kBAdobe PDFView/Open
04_dedication.pdf61.29 kBAdobe PDFView/Open
05_acknowledgements.pdf47.67 kBAdobe PDFView/Open
06_table of contents.pdf48.43 kBAdobe PDFView/Open
07_list of abbreviations.pdf39.54 kBAdobe PDFView/Open
08_synopsis.pdf144.12 kBAdobe PDFView/Open
09_list of figures.pdf111.06 kBAdobe PDFView/Open
10_list of tables.pdf40.24 kBAdobe PDFView/Open
11_chapter 1.pdf99.05 kBAdobe PDFView/Open
12_chapter 2.pdf1.64 MBAdobe PDFView/Open
13_chapter 3.pdf11.38 MBAdobe PDFView/Open
14_chapter 4.pdf1.71 MBAdobe PDFView/Open
15_chapter 5.pdf538.06 kBAdobe PDFView/Open
16_chapter 6.pdf960.59 kBAdobe PDFView/Open
17_chapter 7.pdf106.39 kBAdobe PDFView/Open
18_references.pdf138.68 kBAdobe PDFView/Open
19_abstract.pdf6.45 kBAdobe PDFView/Open
20_publications.pdf3.28 MBAdobe PDFView/Open

Items in Shodhganga are protected by copyright, with all rights reserved, unless otherwise indicated.