• Proceedings of the Korean Nuclear Society Conference
• /
• 1999.05a
• /
• pp.394-394
• /
• 1999

• Proceedings of the Mineralogical Society of Korea Conference
• /
• 2001.06a
• /
• pp.60-63
• /
• 2001

• Proceedings of the Korean Vacuum Society Conference
• /
• 1997.07a
• /
• pp.85-85
• /
• 1997

• The Science & Technology
• /
• no.6 s.445
• /
• pp.48-50
• /
• 2006

• Proceedings of the Petrological Society of Korea Conference
• /
• 2001.06a
• /
• pp.60-63
• /
• 2001

• Polymer Science and Technology
• /
• v.17 no.3
• /
• pp.368-377
• /
• 2006

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.23 no.6
• /
• pp.666-674
• /
• 2019

In the mass spectrum of the mass spectrometer, the spectrum of the low peak adjacent to the spectrum having the high peak value is connected to each other and thus the separation is difficult. This inter-spectral overlap causes degradation of the mass spectral detection performance and resolution. In this paper, we propose a method to improve the mass spectrum detection performance and peak accuracy of residual gas analyzer. The type discrimination according to the characteristics of the ion signal block and the pre-correction for the peak position error can separate and detect the spectrum of the low peak connected to the adjacent spectra. To verify the performance of the proposed method, we compared the proposed method with the conventional method in simulations using actual ion signals obtained from the mass spectrometer under development.

• Journal of Space Technology and Applications
• /
• v.3 no.1
• /
• pp.86-99
• /
• 2023

The mass spectrometer, being an essential scientific instrument for uncovering the origin of the solar system and life, has been used since the early 1970s on board spacecraft to obtain information of neutral and ionized elements in the atmosphere and surface of the moon, planets, asteroids, and comets. According to the 4th Basic Plan for the Promotion of Space Development (2023-2027), Korea plans to conduct lunar landing in 2032 and Mars landing in 2045 as the core goals of the plan and focuses on developing the technologies required for unmanned robotic exploration missions. In this regard, it is crucial to develop the technology of a mass spectrometer, which is the most fundamental payload for space exploration for maximized scientific achievements, however never tried before in any domestic space missions. We describe in this paper the principle of a domestically developed quadrupole mass spectrometer, its prototype model, and the test results of its performance. We conclude this paper with intended future improvements.

• Transactions of the Korean Society of Mechanical Engineers B
• /
• v.30 no.7 s.250
• /
• pp.638-645
• /
• 2006

Recently, we reported that significant ion loss occurred prior to its detection in the conventional single particles mass spectrometry and more seriously the loss is ion-kinetic-energy-dependent. These lead to significant error in the measured chemical composition of nanoparticles. Here we attempted to design a novel ion optics that is capable of 100% detection of ions generated from single nanoparticle. Using a commercial software SIMION, we simulated the trajectories of ions launched at different speeds inside the previous single particle mass spectrometer We tested how affect changes in shape of repelling plate, adding Einzel lens, substitution of tube electrode between extraction and acceleration grids. As a results, we could find a best design by assembling the trials in the present condition.

• Nuclear industry
• /
• v.17 no.3 s.169
• /
• pp.56-63
• /
• 1997