Curriculum Vitaes
  1. Researcher Search Results
  2. Yasufumi Susuki

Yasufumi Susuki

  (鈴木 康文)

Profile Information

Affiliation
Professor, Division of Math, Sciences, and Information Technology in Education, Osaka Kyoiku University
Degree
Doctor (Engineering)(Kyoto University)
京都大学博士(工学)(京都大学)
Master (Engineering)(Kyoto University)
工学修士(京都大学)
Researcher number
00196784
J-GLOBAL ID
200901094497580318
researchmap Member ID
1000027504
External link

Research Interests

 3

Research Areas

 3

Research History

 4

Education

 2

Committee Memberships

 14
More

Papers

 77
  • Y SUSUKI, M FRITZ, K KIMURA, M MANNAMI, N SAKAMOTO, H OGAWA, KATAYAMA, I, T NORO, H IKEGAMI
    PHYSICAL REVIEW A, 50(4) 3533-3536, Oct, 1994  Peer-reviewed
    Mean energy losses of foil-transmitted H-2+ ions are measured for the incidence of 9.6-MeV/amu H-2+, ions on carbon foils of 1.5-8.5 mug/cm2 thickness. The measured ions are those that have traversed the carbon foil without loss of their original electrons. The stopping power of carbon for 9.6-MeV/amu H-2+ ions, derived from the energy losses, is 55.8+/-4.6 eV/(mug/cm2). The obtained stopping power is compared with that calculated with the first Born approximation. The calculated result is slightly larger than the experimental one.
  • M FRITZ, K KIMURA, Y SUSUKI, M MANNAMI
    PHYSICAL REVIEW A, 50(3) 2405-2409, Sep, 1994  Peer-reviewed
    Energy losses of 1-MeV H-2+ ions passing through carbon foils of 2-8 mug/cm2 thickness have been measured. The observed energy loss increases linearly with the target thickness and shows an offset, 0.4 keV, at zero thickness. The stopping power derived from the observed energy losses is 1.15 times as large as the sum of the stopping powers for two single H+ of the same velocity. Stopping powers for H-2+ ions and diprotons are calculated with the first Born approximation. The calculated stopping power for the diproton agrees quite well with the one observed. This indicates that the observed H-2+ ions traverse the target as diprotons after the loss of the binding electrons upon entrance into the foil and recapture target electrons at the exit surface. The observed energy-loss offset at zero thickness also supports this scenario.
  • Y SUSUKI, T ITO, K KIMURA, M MANNAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 90(1-4) 310-313, May, 1994  Peer-reviewed
    Scattered H+ fragments resulting from glancing angle incidence of MeV HeH+ ions on the clean (001) surface of a SnTe crystal are distributed on an ellipse in the E-phi plane, where the angle phi is measured in the plane parallel to the surface and E is the energy of the fragment. The kinetic energies released upon dissociation derived from the diameters of the ellipses are smaller than those calculated from the explosion of fully ionized fragments. Based on a simplified model, we have simulated the dissociative scattering of HeH+ ions at the surface, where the dissociation takes place via excitation of HeH+ ions and the charges of fragments change along the trajectory. It is concluded from the simulation that the cross section for dissociation in HeH+-electron collisions is of the order of 10(-16) cm2.
  • Y SUSUKI, T ITO, K KIMURA, M MANNAMI
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 61(10) 3535-3546, Oct, 1992  Peer-reviewed
    Angular and energy distributions of scattered fragments have been measured at glancing angle incidence of MeV HeH+ ions on a clean (001) surface of SnTe crystal. The distributions show that the internuclear vectors between fragments tend to align with the beam direction and the kinetic energy of the fragments acquired by the dissociation is smaller than that released at He2+-H+ explosion. The alignment of the internuclear vectors is explained in terms of a surface wake potential due to dynamic response of surface electrons to the charges of fragments. The observed kinetic energy indicates that most of the HeH+ ions are excited to some excited states without loss of electrons and dissociate into pairs of He and H ions on the incoming trajectories and the loss of electrons of the fragments does not occur until the internuclear distance of the pairs becomes a few times of the ground state one.
  • M MANNAMI, K KIMURA, Y SUSUKI, M HASEGAWA, Y MIZUNO, M TSUJI, N SAKAMOTO, H OGAWA, KATAYAMA, I, T NORO, H IKEGAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 67(1-4) 114-119, Apr, 1992  Peer-reviewed
    Convoy electrons are studied, which are produced by the transmission of 50 MeV He-3(2+) ions through two thin foils of carbon, where the downstream foil is exposed to the beam transmitted through the upstream foil. By eliminating the convoy electrons emitted from the upstream foil by applying an electric field, the convoy electrons produced at the downstream foil are studied. The yields of convoy electrons produced at the downstream foil, which has a thickness of less than the mean free path for convoy electrons (approximately 3-mu-g/cm2), are about twice as large as those emitted from a single foil of the same thickness. The increase is attributed to the convoy electrons produced by electron loss to the continuum (ELC) of Rydberg states of He-3(+) ions produced at the upstream foil.
  • Y MIZUNO, M HASEGAWA, Y SUSUKI, K KIMURA, MH MANNAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 67(1-4) 164-167, Apr, 1992  Peer-reviewed
    Convoy electrons produced at glancing angle scattering of MeV H2+, H3+, HeH+ molecular ions from a clean (001) surface of SnTe single crystal are studied. Acceleration of the convoy electrons is observed similarly to the glancing angle scattering of atomic ions. The acceleration is larger than that observed at glancing angle scattering of the atomic ions with the same velocity which constitute the molecular ion. The experimental results are explained in terms of the surface wake induced by Coulomb exploding fragments.
  • Y SUSUKI, S FUKUI, K KIMURA, M MANNAMI
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 31(3) 882-886, Mar, 1992  Peer-reviewed
    Yields of secondary electrons from the (001) surface of SnTe are studied at the impact of 0.3-0.8 MeV/amu H+, H-2+ and H-3+ ions. The yield per ion upon impact of the H(n)+ ion is more than n times as large as that of isotactic proton impact. The observed molecular effects in the yields are explained as being the result of increased stopping power for fragment protons and of electrons released from the molecular ions upon their dissociation. It is also shown that the scaling relation, gamma-3 = 2-gamma-2 - gamma-1, remains roughly constant at oblique incidence angles up to 10-degrees to the surface, where gamma(n) is the yield at H(n)+ incidence.
  • M HASEGAWA, T FUKUCHI, Y SUSUKI, S FUKUI, K KIMURA, M MANNAMI
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 30(9A) 2074-2081, Sep, 1991  Peer-reviewed
    Anomalies in the yield of ion-induced secondary electrons from single-crystalline target are studied. They are (1) disappearance of channelling dips in the angular distribution of the yield of secondary electrons in MeV light ion channelling, and (2) an increase of the yield at angle of incidence on a surface smaller than about 10-degrees. These are interpreted in terms of ion trajectories affected by crystal periodicity and effective mean escape length for secondary electrons in a solid.
  • Y SUSUKI, T BABA, S FUKUI, MH MANNAMI
    SURFACE SCIENCE, 254(1-3) 97-104, Aug, 1991  Peer-reviewed
    Total secondary electron emission yields, gamma, were measured at the bombardment of Li+, Na+ and K+ ions with energies ranging from 15 to 65 keV on clean (001) surfaces on SnTe and PbSe crystals under UHV conditions. The yields are explained in terms of a kinetic electron emission model. From the orientation dependence of gamma, the ratio of the stopping power for channelling to that for random ions is deduced for a few low-index channels. Anomalous dependence of gamma on the thickness of PbSe layer during in situ expitaxial growth on SnTe(001) is found, and this is explained as the result of dechannelling of ions at misfit dislocations on the PbSe/SnTe interface.
  • M MANNAMI, K KIMURA, M HASEGAWA, Y SUSUKI, Y MIZUNO, N SAKAMOTO, H OGAWA, KATAYAMA, I, T NORO, H IKEGAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 56-7 180-183, May, 1991  Peer-reviewed
    Yields of convoy electrons are measured at the transmission of 50 MeV3He2+ ions through thick foils of C, Al, Ti, Ni, Mo, Ag, Ta and Au, Au foils coated with a thin C layer (< 11-mu-g/cm2) and thin carbon foils (1.2-100-mu-g/cm2). It is shown that the convoy electron yield is proportional to the He+ fraction in the beam transmitted by the foil. The results are discussed with the two step model of convoy electron production.
  • M TSUJI, Y MIZUNO, Y SUSUKI, M MANNAMI
    JOURNAL OF CRYSTAL GROWTH, 108(3-4) 817-820, Feb, 1991  Peer-reviewed
    Good single crystals of PbS and PbTe are grown epitaxially on the (001) surface of SnTe. Misfit dislocations are observed on the interface of a PbTe/SnTe bicrystal but not on a PbS/SnTe interface by transmission electron microscopy. These observations are confirmed by detection of ion scattering from misfit dislocations in energy spectra of ions at RBS/ channelling of MeV He ions.
  • Y MIZUNO, M HASEGAWA, Y SUSUKI, K KIMURA, MH MANNAMI
    RADIATION EFFECTS AND DEFECTS IN SOLIDS, 117(1-3) 131-137, 1991  Peer-reviewed
  • N SAKAMOTO, H OGAWA, M MANNAMI, K KIMURA, Y SUSUKI, M HASEGAWA, KATAYAMA, I, T NORO, H IKEGAMI
    RADIATION EFFECTS AND DEFECTS IN SOLIDS, 117(1-3) 193-195, 1991  Peer-reviewed
  • Y SUSUKI, H MUKAI, K KIMURA, M MANNAMI
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 59(4) 1211-1217, Apr, 1990  Peer-reviewed
  • Y SUSUKI, H MUKAI, K KIMURA, M MANNAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 48(1-4) 347-350, Mar, 1990  Peer-reviewed
  • M HASEGAWA, K SUEOKA, Y SUSUKI, K KIMURA, M MANNAMI, H OGAWA, N SAKAMOTO, T NORO, KATAYAMA, I, H IKEGAMI
    PHYSICS LETTERS A, 144(6-7) 357-360, Mar, 1990  Peer-reviewed
  • M. MANNAMI, K. KIMURA, Y. SUSUKI, M. HASEGAWA, Y. FUJII
    Ion Beam Interactions with Solids, 1(1) 85-93, Mar, 1989  
  • K. KIMURA, M. HASEGAWA, Y. FUJII, Y. SUSUKI, M. MANNAMI
    Ion Beam Interactions with Solids, 1(1) 257-262, Mar, 1989  
  • K KIMURA, Y FUJII, M HASEGAWA, Y SUSUKI, M MANNAMI
    PHYSICAL REVIEW B, 38(2) 1052-1057, Jul, 1988  Peer-reviewed
  • M MANNAMI, K KIMURA, Y SUSUKI, Y FUJII, N SAKAMOTO, H OGAWA, T NORO, KATAYAMA, I, H IKEGAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 33(1-4) 62-65, Jun, 1988  Peer-reviewed
  • M HASEGAWA, K KIMURA, Y FUJII, M SUZUKI, Y SUSUKI, M MANNAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 33(1-4) 334-337, Jun, 1988  Peer-reviewed
  • K KIMURA, M HASEGAWA, Y FUJII, M SUZUKI, Y SUSUKI, M MANNAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 33(1-4) 358-364, Jun, 1988  Peer-reviewed
  • Y FUJII, K KIMURA, M HASEGAWA, M SUZUKI, Y SUSUKI, M MANNAMI
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 33(1-4) 405-408, Jun, 1988  Peer-reviewed
  • Y SUZUKI, T KANEKO, M TOMITA, M SAKISAKA
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 56(2) 495-501, Feb, 1987  Peer-reviewed
  • Y SUZUKI, T KANEKO, M TOMITA, M SAKISAKA
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 55(9) 3037-3044, Sep, 1986  Peer-reviewed
  • Y SUZUKI, T KANEKO, M SAKISAKA
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 16(4-5) 397-402, Jun, 1986  Peer-reviewed
  • Y. SUZUKI, T. KANEKO, H. AKATSUKA, N. HIRABAYASHI, T. TOMITA, M. SAKISAKA
    At. Collis. Res. JPN. Prog. Rep., 11 76-77, 1985  Peer-reviewed

Misc.

 74
  • Fukazawa Yuuko, Susuki Yasufumi
    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science, 2021 3P16, 2021  
    We have studied the electron-stimulated desorption from surface of alkali-halides by using grazing angle scattering of protons. When the surface of an alkali halide is irradiated by a few keV of electron energy, several types of defects are created inside the crystal. Numerous defects diffuse in the bulk and form a cluster of defects under the surface which stimulates surface atoms to desorb. Desorption that causes a change in the morphology of the surface is categorized into two types. The 1st is formation of a pit with monolayer depth on a flat surface and the 2nd is desorption from the step edges of the pit. In this study, the changes in desorption yields due to these defects are investigated by comparing the measured scattering intensities of fast protons with calculated ones obtained by a proton-scattering-simulation.
  • Fukazawa Yuuko, Susuki Yasufumi
    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science, 2020 72, 2020  
    The yield of desorbed atoms at electron stimulated desorption (ESD) from the surface of KBr(001) have been investigated through varying the external electron energy and beam current density. When the surface of an alkali halide is irradiated by a few keV of electron energy, several types of defects occur inside the crystal. Some defects diffuse in the bulk and form a cluster of defects under the surface, which stimulate the surface atoms to desorb. Surface atoms are ejected and the ejection is resulting in the layer-by-layer mode removal. In this study, 15 keV protons are incident on the electron-stimulated desorbed KBr surface, and their scattering intensity oscillation according to the desorption period of surface atoms is investigated. The first half-period is found to elongate compared with subsequent half-periods. The elongation depends on the irradiation electron energy and decreases with the elevating temperature of the sample. We discuss to use this elongation to estimate of accumulated defects.
  • Tasaki Kenya, Yoshikawa Yuta, Fukazawa Yuuko, Susuki Yasufumi
    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science, 2019 1P41, 2019  
    The yield of desorbed atoms at electron stimulated desorption (ESD) from the surface of KBr(001) have been investigated through varying the external electron energy and beam current density. When the surface of an alkali halide is irradiated by a few keV of electron energy, surface atoms are ejected by ESD and resulting in the layer-by-layer mode removal. The specular intensity oscillations of 15-keV protons incident on the surface with small angles are measured with variety of the up-mentioned electron-beam conditions and target temperatures.
  • Fukazawa Yuuko, Hioki Taketo, Ito Tsubasa, Susuki Yasufumi
    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science, 2019 1P40, 2019  
    An assembly of stainless steel meshes was made in order to transfer the primary ion beam current to the secondary electron beam current. Secondary electron emission current from the assembly was measured by 3 keV He+ ion beam bombardment. The electron current was reproduced by a simple model based on the study of the secondary electron emission at the ion and electron bombardments. Because we use no high level mathematics and no special material, this work is expected to be attractive for undergraduate students in science colleges.
  • Tasaki Kenya, Fukazawa Yuuko, Susuki Yasufumi
    Meeting Abstracts of the Physical Society of Japan, 74.2 452-452, 2019  
More

Books and Other Publications

 1

Presentations

 16
More

Professional Memberships

 5

Research Projects

 14
More
To the list screen