#### 토카막에서 시간적 공간적으로 변하는 지름 방향의 전기장이 신고전 자리길에 주는 영향 = Effect of a spatially and temporally varying radial electric field on neoclassical orbits in a tokamak

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Neoclassical orbits are affected by spatially and temporally varying radial electric field in a tokamak. For the case of spatially varying electric field, high electric field shear causes a dramatic change of particle orbit topology. In other words, the trajectories of the particles can be squeezed or expanded. Squeezing (or expanding) factor is well-represential by $S\equiv 1+(eI^2 /m Ω^2 ) Φ˝$, where Ω = eB/m, I=BR, and Φ˝ =d^2 Φ /d{ φ }^2 \$ is the electric field shear. On the other hand, for the case of temporally varying electric field, there is no known analytic representation of the orbit modification. In this work, a detailed numerical investigation of the neoclassical polarization drift phenomenon is presented, which may lead to a useful analytic formula in the future.
장충석researcherChang, Choong-Seockresearcher
Description
한국과학기술원 : 물리학과,
Publisher
한국과학기술원
Issue Date
2003
Identifier
179968/325007 / 020013274
Language
kor
Description

학위논문(석사) - 한국과학기술원 : 물리학과, 2003.2, [ v, 33 p. ]

Keywords

전기장 층밀리기; 신고전 자리길; 편극 표류; polarization drift; electric field shear; neoclassical orbits

URI
http://hdl.handle.net/10203/48617
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=179968&flag=dissertation
Appears in Collection
PH-Theses_Master(석사논문)
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