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Jedrska kvadrupolna resonancaTrontelj, Zvonko, 1937-2024Raziskovalna naloga obsega tri dele. V prvem študiramo fazne prehode v ▫$Rb_2ZnBr_4$▫ z jedrsko kvadrupolno resonanco ▫$^{81}Br$▫. Izmerili smo temperaturno odvisnost JKR ▫$Br$▫ v ▫$Rb_2ZnBr_4$▫ na ... temperaturnem intervalu 77 K do 420 K. Iz izmerjenih spektrov lahko sklepamo na obstoj strukturnih faznih prehodov pri T=130 K, T=200 K in pri T=355 K. Analizirali smo mrežno dinamiko in strukturo ▫$Rb_2ZnBr_4$▫. Izmerjene rezultate JKR ▫$^{81}Br$▫ pa smo kritično primerjali z dosedanjimi meritvami in analizami tega vzorca drugih avtorjev. Na koncu smo s preprostim modelom točkastega naboja analizirali razcep kvadrupolnih resonančnih črt pri prehodu iz paraelektrične v ikomenzurabilno fazo. V drugem delu obravnavamo JKR ▫$^{35}Cl$▫ v ▫$(CH_3)_4N(CCl_3COO)_2H$▫. Zgradili smo preprost superregenerativni oscilator, s katerim smo dopolnili meritve na tem vzorcu. V nizkotemperaturni fazi smo lahko sledili šest črt skoraj do prehoda pri 212 K. Tudi nad prehodom smo lahko z gotovostjo opazili dve črti od verjetnih treh. Tretji del podaja opis pulznega spektrometra za JKR. Pulzni spektrometer smo v tem letu dogradili in opravili z njim nekaj začetnih testnih meritev ter ocenili njegove zmogljivosti.Type of material - research reportPublication and manufacture - Ljubljana : RSS : IMFM, 1980Language - slovenian, englishCOBISS.SI-ID - 9777152
Author
Trontelj, Zvonko, 1937-2024
Other authors
Pirnat, Janez, 1948- |
Lužnik, Janko, 1948-2012 |
Podreka, Edo
Topics
fizika |
jedrska kvadrupolna resonanca |
fazni prehodi |
temperaturna odvisnost |
pulzni spektrometer |
physics |
nuclear quadrupole resonance |
phase transitions |
temperature dependence |
pulse spectrometer
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Library/institution |
City | Acronym | For loan | Other holdings |
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National and University Library, Ljubljana | Ljubljana | NUK |
reading room 1 cop.
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Trontelj, Zvonko, 1937-2024 | 00208 |
Pirnat, Janez, 1948- | 02558 |
Lužnik, Janko, 1948-2012 | 04317 |
Source: Personal bibliographies
and: SICRIS
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