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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 : Guinyun KIM
New Physics: Sae Mulli Editorial Board

  • pISSN : 0374-4914
  • eISSN : 2289-0041
Research Papers
Negative Refraction of Ultrasound in a Two-Dimensional Prism-Shaped Phononic Crystal
Yoon Mi KIM1, Kang Il LEE*1, Hwi Suk KANG2, Suk Wang YOON2
1 Department of Physics, Kangwon National University, Chuncheon 24341, Korea
2 Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
The present study aims to investigate theoretically and experimentally the negative refraction of ultrasound in a two-dimensional prism-shaped phononic crystal with a square lattice in water. Using the finite element method, we calculated the acoustic band structure along the $\Gamma$X direction of the first Brillouin zone of a two-dimensional phononic crystal consisting of periodic square arrays of stainless-steel solid cylinders with radii of 0.5 mm and with a lattice constant of 1.5 mm in water. Based on the calculated band structure, the pressure fields of ultrasound transmitted through the phononic crystal in water were calculated over a wide frequency range from 0.5 to 1.0 MHz by using the finite element method, and they were measured experimentally to validate the predicted results. The positive and the negative angles of refraction obtained by using both the finite element method and the refraction experiment were in good agreement with those calculated by using Snell’s law.
New Physics: Sae Mulli 2016; 66: 930-935
Analysis of the Steady-State Orbit in the Free-Electron Laser Based on a Two-Frequency Wiggler
Ki-Bum KIM*
Institute of Liberal Education, Kangwon National University, Chunchon 24341, Korea 
In the free-electron laser, the stability of the electron orbit plays an important role in obtaining high-power radiation, and the two-frequency wiggler is known as one method to improve the stability of the electron orbit. In this paper, we study the stability of relativistic electron orbits in a realizable, helical, wiggler magnetic field based on the two-frequency wiggler including the self-generated field. The solutions for the steady-state orbits are numerically calculated from the Hamiltonian which is canonically transformed by using a generating function. To investigate the regular and the chaotic states of off-axis electron orbits, we use a numerical method to analyze the Poincar$\grave{e}$ maps, the spectrum of electron orbits, and the maximal Lyapunov exponent. 
New Physics: Sae Mulli 2016; 66: 916-922
New Physics: Sae Mulli 2016; 66: 941~1061
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Special Issue on "Search for Dark Matter"
Ki-Young CHOI, Kihyeon CHO*
New Physics: Sae Mulli 2016; 66: 941-941  
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Research Papers
Who Ordered Dark Matter?: The Necessity of Dark Matter
Seong Chan PARK*
New Physics: Sae Mulli 2016; 66: 942-945  
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Advent and Nature of Dark Matter - A Brief Summary
Hongsu KIM*
New Physics: Sae Mulli 2016; 66: 946-949  
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Computational Science and the Search for Dark Matter
Kihyeon CHO*
New Physics: Sae Mulli 2016; 66: 950-956  
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Weakly Interacting Massive Particles as Dark Matter
Ki-Young CHOI*
New Physics: Sae Mulli 2016; 66: 957-961  
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Gauge Kinetic Mixing and Dark Matter
Jong-Chul PARK*
New Physics: Sae Mulli 2016; 66: 962-965  
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Hidden Sector DM Models with Local Dark Gauge Symmetries: Higgs Portal DM Models and Beyond
Pyungwon KO*
New Physics: Sae Mulli 2016; 66: 966-977  
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Nontrivial Dark Matter Scenarios at the Energy Frontier
Doyoun KIM, Myeonghun PARK*
New Physics: Sae Mulli 2016; 66: 978-983  
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The Sterile Neutrino as Dark Matter
Sin Kyu KANG*
New Physics: Sae Mulli 2016; 66: 984-992  
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SIMP Dark Matter
Hyun Min LEE*
New Physics: Sae Mulli 2016; 66: 993-997  
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A Review of the Effects of Dark Matter on Big-Bang Nucleosynthesis
Dukjae JANG*, Myung-Ki CHEOUN†
New Physics: Sae Mulli 2016; 66: 998-1004  
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Indirect Detection of Dark Matter through Cosmic-Rays
Jong-Chul PARK*
New Physics: Sae Mulli 2016; 66: 1005-1008  
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Status of Direct-Detection Experiments in Korea on Dark Matter
Hyun Su LEE*
New Physics: Sae Mulli 2016; 66: 1009-1016  
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Establishing an Axion Experiment in Korea
Woohyun CHUNG*, Sung Woo YOUN
New Physics: Sae Mulli 2016; 66: 1017-1022  
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Neutrino Oscillation Experiments to Search for Sterile Neutrinos
New Physics: Sae Mulli 2016; 66: 1023-1027  
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Recent Experimental Results for the Dark-Matter Search at the Large Hadron Collider
Hwidong YOO*, DongHee KIM†
New Physics: Sae Mulli 2016; 66: 1028-1035  
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Searches for the Dark Photon at Fixed Target Experiments
Suyong CHOI*
New Physics: Sae Mulli 2016; 66: 1036-1044  
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SHiP - Search for Hidden Particles
Ki-Young CHOI, Sung Hyun KIM, Kang Young LEE*, Byung Do PARK, Chun Sil YOON, Yeong Gyun KIM, Jae Woo KO, Dong LIU, Jong Kwan WOO†
New Physics: Sae Mulli 2016; 66: 1045-1061  
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Synthesis and Characterization of Nitrogen-doped Activated Carbon by Using Melamine
Hien Ngoc Thi LE, Hae Kyung JEONG*
Precision Electrical Measurement Experiment Using a Lock-in Amplifier that is Suitable for Science and Engineering Undergraduates
Soyeun PARK, Yong J. LEE*
A Network Approach to the Transfer Market of European Football Leagues
Sangmin LEE, Inho HONG, Woo-Sung JUNG*

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