Slāpekļa vakances centru relaksācijas laika noteikšana mākslīgā dimanta kristālā

6533b831fe1ef96bd1299372

RESEARCH PRODUCT

Slāpekļa vakances centru relaksācijas laika noteikšana mākslīgā dimanta kristālā

Mihails Birjukovs

subject

LIF ODMR NV center Fizika Spin relaxation

description

Zināms, ka spinu gareniskās relaksācijas laiks T_1 izteikti korelē ar NV centru koncenrtāciju mērījumu vietā, tomēr nav skaidra precīza atkarība. Tika veikti divi neatkarīgie eksperimenti (Latvijā, LU FMF Lāzeru centrā un ASV, Berklijā), kuru rezultātā iegūtie dati ir pretrunā. Darba mērķis ir noteikt slāpekļa-vakances jeb NV centru T_1 atkarību no to lokālas koncentrācijas mākslīgā dimanta kristālā. Tika izveidota jaunā iekārta lāzeru inducētās fluorescences (LIF) iegūšanai un detektēšanai, kurā pirmo reizi Lāzeru Centra praksē tika izmantots augstās izšķirtspējas eļļas imersijas fluorescences objektīvs. Izmantojot optiski detektētās magnētiskās rezonanses (ODMR) spektrus un programmatūru T_1 laika noteikšanas sekvences vadīšanai, tika veikta otrā mērījumu sērija dotajā paraugā ar mērķi noteikt T_1 vērtības pie dažādām NV centru koncentrācijām.

year	journal	country	edition	language
2016-01-01

https://dspace.lu.lv/dspace/handle/7/32447

PEPhysical Sciences and Engineering
- PE2Fundamental Constituents of Matter
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