41K, 41Ca 및 41Sc 원자핵의 One Hole 상태

金文元 공주대학교 사범대학 과학교육연구소 1985 과학교육연구 Vol.17 No.1

The one-hole states in nuclei of ?? and ?? have calculated with a model space based on the (??.2P₃/₂)²(1d₃/₂,2S¹/₂)-¹configuration using the nuclear shell model. The two body effective interaction is assumed to be a surface-delda potential. ⁴0Ca is also asumed to be an inert core. Energy spectra and spectroscopic factors are obtained and compared with the experimental data. The calculate results in fair agreement with the observed values.

韓ㆍ美兩國의 中等學校 科學敎師 養成制度와 그 敎育內容에 關한 比較硏究

金文元 공주대학교 사범대학 과학교육연구소 1988 과학교육연구 Vol.20 No.1

The aim of this paper is in finding out Korea's and America's education systems of teachers, curriculum and requirements for issuing teacher's certificate, in order that we may seek a better edcation system of science teacners and it's curriculum. The America's underlying sprit of education system for teachers, contents of education. problems of science education and improvement trend of teachers' education, are compared and examined with the Korea's. America's school system is very similar to Korea's but the cultural and basic subjects are throughly thaught in teachers colleges, and the university's tradition and educational view and regional characteristics are strongly reflected in the curriculum. In Korea, on the other hand, the characteristics of teachers' college is very lacking in the curriculum and in science education. the curriculum of teachers' college is following that of the natural college or science college. So the completion of cultural and basic subjects. the fullscale reappraisal of curriculum and bold educational investment are strongly reguired for the improvement of science education in our teachers colleges.

Broadband Networks : System Integration , Management , and Control

김문원 한국통신학회 1995 한국통신학회 워크샵 Vol.- No.-

E_(lab) = 360MeV에서의 ^(12)C + ^(12)C 탄성산란의 위상이동 분석

金文元 公州大學校 基礎科學硏究所 1993 自然科學硏究 Vol.2 No.-

New Modified Glauber Model을 이용하여, deflection function과 differential cross section을 구하는 방법을 보이고, Elab = 36MeV 에서의 12C+12C 탄성산란 실험 data와 비교하였다. 또한 McIntyre parametrization을 이용하고, Fuller formalism에 의해 12C + 12C 탄성산란의 nearside와 farside분석을 시도하였다. This paper reproduces an additional semiclassical phase-shift analysis of elastic scattering data for Elab = 36MeV 12C beams on 12C. The nearside and farside decomposition of the elastic cross sections following the Fuller relationship and using the McIntyre parametrization is also presented.

습식 배연탈황설비용 습분제거기 포집효율 평가

김문원,육세진,류태우,Kim, Moon-Won,Yook, Se-Jin,Yu, Tae U 한국입자에어로졸학회 2018 Particle and Aerosol Research Vol.14 No.3

Recently, there has been much research on the effect of ultrafine dust on human body with increasing interest in the ultrafine dust. In the Republic of Korea, there are many old thermal power plants, and the amount of ultrafine dust emitted from the thermal power plants is reported to be about 14% of the total amount of domestic fine dust. Therefore, the amount of fine dust from the flue gas desulfurization facility in the thermal power plant needs be reduced. In this study, we made an experimental setup to simulate a flue gas desulfurization facility and analyzed the physical characteristics of the particles passing through a mist eliminator. Experiments were carried out to investigate the collection efficiency of the mist eliminator by using the Arizona Test Dust in a dry environment, and then spraying limestone slurry into the flue gas desulfurization system equipped with the mist eliminator to examine the size and morphology of limestone particles upstream and downstream of the mist eliminator. Cut-off size of the mist eliminator was formed at about $6{\mu}m$. The result of this study is expected to be helpful for designing an electrostatic precipitator for removing particles passing through the mist eliminator.

Dirac Phenomenological Analyses of Unpolarized Proton Inelastic Scattering from 22Ne

김문원,심숙이 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.5

Unpolarized 800-MeV proton inelastic scatterings from an s-d shell nucleus 22Ne are analyzed byusing phenomenological optical potentials in the Dirac coupled channel formalism. The first-orderrotational collective model is used to obtain the transition optical potentials for the low-lying excitedcollective states that belong to the ground-state rotational band of the nucleus. The optical potentialparameters of a Woods-Saxon shape and the deformation parameters of the excited states arevaried phenomenologically by using the sequential iteration method to reproduce the experimentaldifferential cross-section data. The effective central and spin-orbit optical potentials are obtainedby reducing the Dirac equations to a Schr¨odinger-like second-order differential equations, and thesurface-peaked phenomena are observed at the real effective central potentials when the scatteringfrom 22Ne is considered. The obtained deformation parameters of the excited states are comparedwith those of the nonrelativistic calculations and with those for another s-d shell nucleus 20Ne. Thedeformation parameters for the 2+ and the 4+ states of the ground-state rotational band for thenucleus 22Ne are found to be smaller than those of 20Ne, indicating that the couplings of thosestates to the ground state are weaker for the 22Ne than for the 20Ne nucleus. The multistep channelcoupling effect is confirmed to be important for the 4+ state excitation of the ground-state rotationalband for proton inelastic scattering from the s-d shell nucleus 22Ne.

입자-구멍배위와 42Ca, 42Sc, 및 42Ti 원자핵의 에너지 스펙트럼

심숙이,김문원 公州大學校 基礎科學硏究所 1996 自然科學硏究 Vol.5 No.-

Shell-model calculations are performed to investigate the level structure in ??, ?? and ?? Nuclei. The shell model states are expressed for two-particle, particle-hole and three-particle one-hole configurations in terms of coupled two-particle states. We have used the modified surface-delta interaction, pairing and Coulomb interaction in this calculation. The configurations considered are ??, ?? and Single-particle energies and parameters of the interaction are determined by least-squares fitting procedure. The resulting two-body matrix elements are applied to calculate the energy spectra of two-particle states and three-particle one-hole states in ??, ?? and ?? Nuclei.

상대론적 충격 근사법을 이용한 변형핵에서의 800 MeV 양성자 비탄성 산란의 디랙 채널 결합 분석

김문원,심숙이 公州大學校 基礎科學硏究所 1998 自然科學硏究 Vol.7 No.-

The 800-MeV proton inelastic scattering from an axially deformed nucleus of 24Mg is analyzed using microscopic relativistic impulse approximation optical potentials in the Dirac, coupled channel formalism. The modified relativistic Hartree approximation is used to obtain the relativistic nuclear density for the deformed nucleus, and the nuclear density is folded with Lorentz invariant NN amplitudes to obtain the RIA optical potentials. A first-order rotational collective model is used to obtain the transition optical potentials to describe the low-lying excited stales of the ground-state rotational band. The effect of the multistep process is investigated by including the channel coupling between two adjacent excited states in addition to the coupling between the ground state and excited stales. The strength of the imaginary scalar potential is around 60 MeV at zero momentum transfer, and the theoretical results agree reasonably well with the experimental data for the ground state and low-lying excited states.

A=41 원자핵의 한-구멍 상태

金文元,金英猷 공주대학교 사범대학 과학교육연구소 1984 과학교육연구 Vol.16 No.1

The one-hole states of A=41 nuclei(?? and ??) have been calculated with a model space based on the ?? ?? configuration using the nuclear shell model. The two-body effective interaction is assumed to be a surface-delta potential. ?? is also assumed to be an inert core. Energy spectra and spectroscopic factors are obtained and compared with the experimental data. The calculated results are in fair agreement with the observed values.

E1ab=210MeV에서의 6Li+28Si 탄성산란의 위상이동 분석

김문원,임해환 公州大學校 基礎科學硏究所 1997 自然科學硏究 Vol.6 No.-

Coulomb interaction 에 nuclear interaction을 첨가한 New Modified Glauber Model을 이용하여, deflection function과 differential cross section을 구하는 방법을 보이고, ?? ?? 탄성산란의 실험 data와 비교 분석하였다. 연구결과 ??, θ₁<0인 경우가 생기고 rainbow scattering이 나타내는 이유를 잘 설명할 수 있었다. It is shown that deflection- function and differential cross section have obtained within the New Modified Glauber Model based on coulomb interaction and nuclear interaction. Using the New Modified Glauber Model, analyses of ?? Elastic Scattering data at ?? are performed. The results reproduced fairly well both θ₁<0 and rainbow scattering. Both dσ/dΩ≠1 and refraction are explained well in New Modified Glauber Model.