Dimanta slāpekļa - vakanču optiskajos centros optiski reģistrējamo magnētisko rezonanšu modelēšana
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Latvijas Universitāte
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Abstract
Maģistra darbā veikta optiski reģistrējamo magnētisko rezonanšu modelēšana ar 13C atomiem bagātinātu dimanta kristālu slāpekļa - vakanču (NV-) optiskajos centros.
NV- centriem tiešā tuvumā esošo 13C atomu kodolu spini sašķeļ NV- centru enerģētisko struktūru, radot potenciāli iespējamas Λ sistēmas, kurās var notikt apdzīvotības slazdošana
attiecībā pret mikroviļņu diapazona magnētiskā dipola pārejām NV- centra elektroniskajā pamatstāvoklī.
NV- centra ar apkārtējiem n 13C atomu kodoliem sistēmas enerģētiskā struktūra aprakstīta, izmantojot spina Hamlitoniāņa metodi.
Izveidota datorprogramma optiski reģistrējamo magnētisko rezonanšu modelēšanai.
Rezultātā iegūti optiski reģistrējamo magnētisko rezonanšu modelēti signāli, kas salīdzināti ar eksperimentāli iegūtajiem datiem.
In this work optically detectable magnetic resonance modeling in diamond crystal, that is enriched with 13C atoms, nitrogen - vacancy optical centers. The spins of the 13C atoms that are in direct vicinity of the NV- center split the electronic structure of the NV- center creating potentially possible Λ systems in which population trapping with respect to microwave band magnetic dipole transitions in the NV- centers electronic ground state can occur. The energetic structure of the NV- center with surrounding n 13C atomic nuclei system is described using the spin Hamiltonian method. A computer program is created for the modeling of optically detectable magnetic resonances. As a result optically detectable magnetic resonance signals are obtained and compared with experimentally obtained data.
In this work optically detectable magnetic resonance modeling in diamond crystal, that is enriched with 13C atoms, nitrogen - vacancy optical centers. The spins of the 13C atoms that are in direct vicinity of the NV- center split the electronic structure of the NV- center creating potentially possible Λ systems in which population trapping with respect to microwave band magnetic dipole transitions in the NV- centers electronic ground state can occur. The energetic structure of the NV- center with surrounding n 13C atomic nuclei system is described using the spin Hamiltonian method. A computer program is created for the modeling of optically detectable magnetic resonances. As a result optically detectable magnetic resonance signals are obtained and compared with experimentally obtained data.