New Physics: Sae Mulli

Aims and Scope

The origin of New Physics: Sae Mulli (NPSM, ISO abbreviation: New Phys.: Sae Mulli.): Sae Mulli (새물리 in Korean characters means ‘new physics’) is the oldest Korean pure scientific journal. It was first published in 1961 just after the Korean War by the Korean Physical Society (KPS). The primary mission of Sae Mulli was to start building up Korean physics research community from almost nothing and in fact Sae Mulli had made tremendous contributions to the Korean science community. Through a peer-review system, Sae Mulli had continued elevating the level of scientific researches, consequently becoming a cornerstone of the economic miracle of Korea...

Editor-in-Chief : Sam Jin KIM
New Physics: Sae Mulli Editorial Board

pISSN : 0374-4914
eISSN : 2289-0041

Tel : +82-2-556-4737
Fax : +82-2-554-1643
E-mail: npsm@npsm-kps.org

Research Papers

Optimization of the Beam Parameters in a Time-Dependent Free-Electron Laser

Soon-Kwon NAM*, Tae Hoon KIM

Department of Physics, Kangwon National University, Chuncheon 24341, Korea

We developed an extended 3D time-dependent free-electron laser (3D time-dependent FEL) code to optimize the beam parameters in a free-electron laser oscillator. We optimized the beam parameters and the evolution of the temporal pulse in a 3-dimensional time-dependent free-electron laser oscillator by using the extended 3D time-dependent FEL code that we developed. The evolution of the temporal pulse was investigated for wiggler lengths of 0.5 m, 1.0 m, 1.5 m and 2.0 m, beam energies of 30 $\sim$ 50 MeV, beam currents of 30 $\sim$ 50 A and radiation wavelengths of 2.48 $\sim$ 2.65 $\mu$m. The gains or various radiation pulses were analyzed at various times from -1.0 $\mu$s to 1.0 $\mu$s for electron beams with energy spreads from 0.01 to 1.4%. In particular, the gain of the radiation pulse was optimized at -0.6 $\mu$s by using our newly developed extended 3D time-dependent FEL code.

New Phys.: Sae Mulli 2018; 68: 1162-1166

The Past and the Present of Physics Education at a Glance: A Review of International Studies on Physics Education by Using Science Mapping Tool

Hunkoog JHO*

Department of General Education, Dankook University, Cheonan 31116, Korea

Since physics was first introduced in school as a means of fostering labor, physics education has contributed much to both society and the scientific community. This study aims at providing an overview of physics education research through science mapping of a large number of references published in international journals up to the present. In this study, 2,089 articles indexed in the Social Sciences Citation Index (SSCI) were extracted from Clarivate Analytics' online database system Web of Science (WoS), and the obtained referential information was analysed using the R solution. Using the biblometrix and the text mining (tm) R-packages, this study performed semantic and knowledge network analyses, such as bibliographic coupling, co-citation, co-word, n-gram and historiograph. The results show the most productive authors and groups as well as the chronological relations among the references. Analysis of science mapping using open-source software not only provides implications for research on physics education in Korea compared to international trends but also allows qualitative and quantitative research to be done in a more systematic way.

New Phys.: Sae Mulli 2018; 68: 1096-1106

New Phys.: Sae Mulli 2018; 68: 1041~1166

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Research Papers

Quantum Electronic Transport in (Bi$_{0.84}$Sb$_{0.16}$)$_2$Se$_3$ Topological Insulator Nanowire

Heungsoon IM, Hong-Seok KIM, Nam-Hee KIM, Yong-Joo DOH*

New Phys.: Sae Mulli 2018; 68: 1041-1047 https://doi.org/10.3938/NPSM.68.1041