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NAVAL POSTGRADUATE SCHOOL Monterey California , THESIS FOCUSING X-RAY TRANSITION RADIATION WITH CYLINDRICAL AND ELLIPTICAL OPTICS by Paul Matthew Votruba Thesis Advisor Xavier K. Maruyama Approved for public release distribution unlimited. UNCLASSIFIED SECURITY CLASSiFiCATiQN Of ThiS PAGE REPORT DOCUMENTATION PAGE FormApproved OMBNo 0704 0188 1a REPORT SECURITY CLASSIFICATION lb RESTRICTIVE MARKINGS Unclassified 2a SECURITY CLASSIFICATION AUTHORITY 3 DISTRIBUTION/AVAILABILITY OF REPORT Approved for public release; 2b DECLASSIFICATION^ DOWNGRADING SCHEDULE distribution is unlimited. 4 PERFORMING ORGANIZATION REPORT NUMBER(S) 5 MONITORING ORGANIZATION REPORT NUMBER(S) 6a NAME OF PERFORMING ORGANIZATION 6b OFFICE SYMBOL 7a NAME OF MONITORING ORGANIZATION (If applicable) Naval Postgraduate School Naval Postgraduate School 33 6c ADDRESS {City, State, and ZIPCode) 7b ADDRESS{City, State, and ZIPCode) Monterey, CA 93943-5000 Monterey, CA 93943-5000 8a NAME OF FUNDING/SPONSORING 8b OFFICE SYMBOL 9 PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER ORGANIZATION (If applicable) 8c ADDRESS(City, State, and ZIPCode) 10 SOURCE OF FUNDING NUMBERS PROGRAM PROJECT TASK WORK UNIT ELEMENT NO NO NO ACCESSION NO 11 TITLE (Include Security Classification) FOCUSING X-RAY TRANSITION RADIATION WITH CYLINDRICAL AND ELLIPTICAL OPTICS 12 PERSONAL AUTHOR(S) Votruba Paul M , 13a TYPE OF REPORT 13b TIME COVERED 14 DATE OF REPORT {Year, Month Day) 15 PAGE COUNT Master's Thesis FROM TO December 1991 99 16 SUPPLEMENTARY NOTATION Ther views expressed in this thesis are those of the author and do not reflect the official policy or position of the Department of Defense or the U.S. Government. 17 COSATI CODES 18 SUBJECT TERMS {Continue on reverse it necessary and identity by block number) FIELD GROUP SUB-GROUP Focusing Optics, Transition Radiation, X-Rays 19 ABSTRACT (Continue on reverse if necessary and identify by block number) We have demonstrated the ability of a nickel elliptical tube to focus the conically diverging pattern of x-ray transition radiation. The x-ray TR was produced by passing moderate-energy (60 to 100 MeV) electron beams through targets consisting of thin (1 urn) multiple foils of aluminum and titanium. The foils were placed in a vacuum chamber; perpendicular to the Naval Postgraduate School's linac primary beamline. An elliptical nickel tube, with a length of 30.5 cm, was placed concentric to the axis of the conical photon beam (as defined by the axis of the electron beam) with an entrance and exit of 1.4 m and 1.7 m, respectively, from the source of the TR at the end of the foil stack. The intensity profile was subsequently measured with a linear image detector placed 3.0 m from the exit of the foil stack. Through a series of experiments, taking into arrnnnf ^p BJLEacfcfi nf snx£&C£ rmighnPQQ the . 20 DISTRIBUTION/AVAILABILITY OF ABSTRACT 21 ABSTRACT SECURITY CLASSIFICATION [3UNCLASSIFIED/UNLIMITED SAME AS RPT DTIC USERS Unclassified 22a NAME OF RESPONSIBLE INDIVIDUAL 22b TELEPHONE (Include AreaCode) 22c OFFICE SYMBOL Xavier K. Maruyama (408) 646-2431 Ph/Mx DD Form 1473, JUN 86 Previouseditionsareobsolete SECURITY CLASSIFICATION OF THIS PAGE UNCLASSIFIED S/N 0102-LF-014-6603 UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAGE Block 19 Continued nickel elliptical tube demonstrated the ability to collect 3 to 5 times more energy than a cylindrical quartz tube. DD Form 1473. JUN 86 (Reverse) security classification of this page ii UNCLASSIFIED Approved for public release; distribution is unlimited Focusing Transition Radiation with Cylindrical and Elliptical Optics by Paul M. Yotruba Lieutenant, United States Navy B.S., University of Minnesota, 1982 Submitted in partial fulfillment of the requirements for the degree of MASTERS OF SCIENCE IN PHYSICS from the NAVAL POSTGRADUATE SCHOOL December 1991 a V«7 / \_/ ABSTRACT We have demonstrated the ability of a nickel elliptical tube to focus the conical ly diverging pattern of x-ray transition radiation. The x-ray TR was produced by passing moderate-energy (60 to 100 MeV) electron beams through targets consisting of thin (1 urn) multiple foils of aluminum and titanium. The foils were placed in a vacuum chamber; perpendicular to the Naval Postgraduate School's linac primary beamline. An elliptical nickel tube, with a length of 30.5 cm, was placed concentric to the axis of the conical photon beam (as defined by the axis of the electron beam) with an entrance and exit of 1.4 m and 1.7 m, respectively, from the source of the TR at the end of the foil stack. The intensity profile was subsequently measured with a linear image detector placed 3.0 m from the exit of the foil stack. Through a series of experiments, taking into account the effects of surface roughness, the nickel elliptical tube demonstrated the ability to collect 3 to 5 times more energy than a cylindrical quartz tube. IV