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master's thesis
Mjerenje energije gama zraka kod raspada orto-pozitronija
Zagreb: University of Zagreb, Faculty of Science, 2014. urn:nbn:hr:217:405405
Pavelić, Luka
University of Zagreb
Faculty of Science
Department of Physics

Institutional repository: Repository of the Faculty of Science

Cite this document

Pavelić, L. (2014). Mjerenje energije gama zraka kod raspada orto-pozitronija (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:405405

Pavelić, Luka. "Mjerenje energije gama zraka kod raspada orto-pozitronija." Master's thesis, University of Zagreb, Faculty of Science, 2014. https://urn.nsk.hr/urn:nbn:hr:217:405405

Pavelić, Luka. "Mjerenje energije gama zraka kod raspada orto-pozitronija." Master's thesis, University of Zagreb, Faculty of Science, 2014. https://urn.nsk.hr/urn:nbn:hr:217:405405

Pavelić, L. (2014). 'Mjerenje energije gama zraka kod raspada orto-pozitronija', Master's thesis, University of Zagreb, Faculty of Science, accessed 23 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:405405

Pavelić L. Mjerenje energije gama zraka kod raspada orto-pozitronija [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2014 [cited 2024 November 23] Available at: https://urn.nsk.hr/urn:nbn:hr:217:405405

L. Pavelić, "Mjerenje energije gama zraka kod raspada orto-pozitronija", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:217:405405

Metadata
TitleMjerenje energije gama zraka kod raspada orto-pozitronija
Title (english)Measurements of ortho-positronium gamma ray energies
AuthorLuka Pavelić
MentorDamir Bosnar (mentor)
Committee memberDamir Bosnar (predsjednik povjerenstva)
Committee memberMihael Makek (član povjerenstva)
Committee memberGorjana Jerbić-Zorc (član povjerenstva)
Committee memberDavor Horvatić (član povjerenstva)
Committee memberAna Sušac (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2014-09-30, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract
Elektron i pozitron mogu tvoriti nestabilno vezano stanje zvano pozitronij (Ps). Pozitronij je egzotičan atom analogan vodiku, pa su im tako energijski nivoi slični. Spinovi elektrona i pozitrona mogu biti orijentirani u istom smjeru (singlet stanja) i suprotnom smjeru (triplet stanja). Singlet stanje (para-pozitronij) raspada se na dvije gama zrake, dok se triplet stanje (ortopozitronij) raspada na tri gama zrake. Dva različita stanja također imaju različito vrijeme života i vjerojatnost raspada. U ovom diplomskom radu mjerene su energije gama zraka za određene kutove emisije kod raspada orto-pozitronija. Za detekciju istih, korišten je sustav BaF2 detektora te brzi digitalizator signala za sakupljanje podataka. Za analizu podataka korištena je ROOT platforma.
Abstract (english)
Electron and positron can be in an unstable bound state called positronium (Ps). Positronium is an exotic atom analogus to hidrogen, therefore, they share similar energy levels. The electron and positron spins can be aligned in the same direction (singlet states) or in the opposite directions (triplet states). Singlet state (para-positronium) and triple state (ortho-positronium) decay in two and three gamma rays respectively. Two different states also have different life time and decay probability. In this thesis, gamma rays energies were measured for certain emission angles of ortho-positronium decay. For detection of these photons, system of three BaF2 detectors and fast signal digitizer was used. Data analysis was made with ROOT platform.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:405405
Study programmeTitle: Physics and Computer Science; specializations in: Education
Course: Education
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra fizike i informatike (magistar/magistra fizike i informatike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-06-16 11:06:29