Publications

  1. N.Morita and M.Kumakura,
    Laser cooling of a helium atomic beam
    Jpn. J. Appl. Phys. 30, L1678 (1991)

  2. M.Kumakura and N.Morita,
    Visible observation of metastable helium atoms confined in an infrared/visible double resonance trap
    Jpn. J. Appl. Phys. 31, L276 (1992)

  3. N.Morita, M.Kumakura, T.Yamazaki, E.Widmann, H.Masuda, I.Sugai, R.S.Hayano, F.E.Maas, H.A.Torii, F.J.Hartmann, H.Daniel, T.von Egidy, B.Ketzer, W.Muller, W.Schmid, D.Horvath, and J.Eades,
    First observation of laser-induced resonant annihilation in metastable antiprotonic helium atoms
    Phys. Rev. Lett. 72, 1180 (1994)

  4. R.S.Hayano, F.E.Maas, H.A.Torii, N.Morita, M.Kumakura, T.Yamazaki, H.Masuda, I.Sugai, F.J.Hartmann, H.Daniel, T.von Egidy, B.Ketzer, W.Muller, W.Schmid, D.Horvath, J.Eades, and E.Widmann,
    Laser studies of the decay chain of metastable antiprotonic helium atoms
    Phys. Rev. Lett. 73, 1485 (1994)

  5. H.Daniel, J.Eades, T.von Egidy, F.J.Hartmann, R.S.Hayano, W.Higemoto, D.Horvath, T.M.Ito, Y.Ito, M.Iwasaki, A.Kawachi, B.Ketzer, M.Kumakura, F.E.Maas, H.Masuda, N.Morita, W.Muller, S.N.Nakamura, N.Nishida, K.Shigaki, I.Sugai, H.Tamura, H.A.Torii, E.Widmann, T.Yamazaki,
    Trapping of antiprotons in metastable antiprotonic helium atoms - progress and prospects
    Phys. Atom. Nucl. 57, 1738 (1994)

  6. H.A.Torii, M.Hori, T.Ishikawa, F.E.Maas, R.S.Hayano, N.Morita, M.Kumakura, I.Sugai, B.Ketzer, H.Daniel, F.J.Hartmann, R.Pohl, R.Schmidt, T.von Egidy, D.Horvath, E.Widmann, J.Eades, and T.Yamazaki,
    Laser-induced resonant transitions in the v = n - l - 1 = 2 and 3 metastable cascades of antiprotonic 3He atoms
    Phys. Rev. A 53, R1931 (1996)

  7. R.S.Hayano, T.Ishikawa, H.Tamura, H.A.Torii, M.Hori, F.E.Maas, N.Morita, M.Kumakura, I.Sugai, F.J.Hartmann, H.Daniel, T.von Egidy, B.Ketzer, R.Pohl, D.Horvath, J.Eades, E.Widmann, and T.Yamazaki,
    Observation of double-resonant laser-induced transitions in the v = n - l - 1 = 2 metastable cascade of antiprotonic 4He atoms
    Phys. Rev. A 55, R1 (1997)

  8. T.Yamazaki, B.Ketzer, E.Widmann, J.Eades, H.Daniel, F.J.Hartmann, M.Hasinoff, R.Pohl, R.Schmidt, T.von Egidy, D.Horvath, M. Kumakura, N.Morita, I.Sugai, Y.Fujita, H.A.Torii, M.Hori, T.Ishikawa, F.E.Maas, H.Tamura, and R.S.Hayano,
    Laser resonance studies of the interactions of metastable antiprotonic helium atomcules pbar4He+ with surrounding H2 molecules
    Chem. Phys. Lett. 265, 137 (1997)

  9. B.Ketzer, F.J.Hartmann, T.von Egidy, C.Maierl, R.Pohl, J.Eades, E.Widmann, T.Yamazaki, M.Kumakura, N.Morita, R.S.Hayano, M.Hori, T.Ishikawa, H.A.Torii, I.Sugai, and D.Horvath,
    Hydrogen-assisted laser-induced resonant transitions between metastable states of antiprotonic helium atoms
    Phys. Rev. Lett. 78, 1671 (1997)

  10. T.Yamazaki, E.Widmann, J.Eades, M.Kumakura, N.Morita, H.A.Torii, M.Hori, T.Ishikawa, F.E.Maas, H.Tamura, R.S.Hayano, I.Sugai, Y.Fujita, B.Ketzer, H.Daniel, F.J.Hartmann, M.Hasinoff, R.Pohl, R.Schmidt, T.von Egidy, and D.Horvath,
    High-precision structural studies of the antiprotonic helium atom pbar4He+ by observing laser resonances with dv = d(n - l - 1) = 2
    Phys. Rev. A 55, R3295 (1997)

  11. B.Ketzer, F.J.Hartmann, T.von Egidy, C.Maierl, R. Pohl, J. Eades, E. Widmann, T. Yamazaki, M. Kumakura, N. Morita, R.S. Hayano, M. Hori, T. Ishikawa, H.A. Torii, I. Sugai, D. Horvath,
    Interaction of antiprotonic helium atoms with H2 molecules
    Nuc. Phys. B, 56A, 78 (1997)

  12. E.Widmann, J.Eades, T.Yamazaki, H.A.Torii, R.S.Hayano, M.Hori, T.Ishikawa, M.Kumakura, N.Morita, I.Sugai, F.J.Hartmann, T.von Egidy, B.Ketzer, C.Maierl, R.Pohl, and D.Horvath,
    Hyperfine structure of the metastable pbarHe+ atomcule revealed by a laser-induced (n, l) = (37, 35) to (38, 34) transition
    Phys. Lett. B 404, 15 (1997)

  13. H.A.Torii, R.S.Hayano, F.E.Maas, N.Morita, M.Kumakura, T.Yamazaki, H.Masuda, I.Sugai, B.Ketzer, F.J.Hartmann, H.Daniel, T.von Egidy, W.M?ller, W.Schmid, D.Horvath, J.Eades, and E.Widmann,
    Instrumentation for laser-induced annihilation spectroscopy of metastable antiprotonic helium atoms
    Nucl. Instrum. Methods A 396, 257 (1997)

  14. M.Hori, H.A.Torii, R.S.Hayano, T.Ishikawa, F.E.Maas, H.Tamura, B.Ketzer, F.J.Hartmann, R.Pohl, C.Maierl, M.Hasinoff, T.von Egidy, M.Kumakura, N.Morita, I.Sugai, D.Horvath, E.Widmann, J.Eades, and T.Yamazaki,
    Laser spectroscopic studies of state-dependent collisional quenching of the lifetimes of metastable antiprotonic helium atoms
    Phys. Rev. A 57, 1698 (1998)

  15. B.Ketzer, F.J.Hartmann, T.von Egidy, C.Maierl, R.Pohl, J.Eades, E.Widmann, T.Yamazaki, M.Kumakura, N.Morita, M.Hori, T.Ishikawa, H.A.Torii, I.Sugai, and D.Horvath,
    Quenching of metastable states of antiprotonic helium atoms by collisions with H2 molecules
    J. Chem. Phys. 109, 424 (1998)

  16. F.J. Hartmann, B. Ketzer, C. Maierl, R. Pohl, T. von Egidy, R.S. Hayano, M. Hori, T. Ishikawa, H. Tamura, H.A. Torii, M. Kumakura, N. Morita, I. Sugai, D. Horvath, J. Eades, E. Widmann, and T. Yamazaki,
    Laser spectroscopy of metastable states in the ƒÒ=2 cascade of antiprotonic 3He
    Phys. Rev. A 58, 3604 (1998)

  17. R. Pohl, F.J. Hartmann, B. Ketzer, C. Maierl, T. von Egidy, J. Eades, E. Widmann, T. Yamazaki, M. Kumakura, N. Morita, R.S. Hayano, M. Hori, T. Ishikawa, H.A. Torii, I. Sugai, and D. Horvath,
    Influence of oxygen admixtures on the lifetime of metastable antiprotonic helium atoms
    Phys. Rev. A 58, 4406 (1998)

  18. H.A.Torii, R.S.Hayano, M.Hori, T.Ishikawa, N.Morita, M.Kumakura, I.Sugai, T.Yamazaki, B.Ketzer, F.J.Hartmann, T.von Egidy, R.Pohl, C.Maierl, D.Horvath, J.Eades, and E.Widmann,
    Laser measurements of the density shifts of resonance lines in antiprotonic helium atoms and stringent constraint on the antiproton charge and mass
    Phys. Rev. A 59, 223 (1999)

  19. M.Kumakura and N.Morita,
    Laser trapping of metastable 3He atoms: isotopic difference in cold Penning collisions
    Phys. Rev. Lett. 82, 2848 (1999)

  20. M.Kumakura and N.Morita,
    Magneto-optical trap of metastable helium-3 atoms
    Appl. Phys. B 70, 555 (2000)

  21. B.Ketzer, T.von Egidy, F.J.Hartmann, C.Maierl, R.Pohl, J.Eades, E.Widmann, T.Yamazaki, M.Kumakura, N.Morita, R.S.Hayano, M.Hori, T.Ishikawa, H.A.Torii, I.Sugai, and D.Horvath,
    Collisional quenching of metastable states of antiprotonic helium by hydrogen and deuterium molecules
    Eur. Phys. J. D13, 305 (2001)

  22. K.Honda, Y.Takasu, T.Kuwamoto, M.Kumakura, Y.Takahashi, and T.Yabuzaki,
    Optical dipole force trapping of a fermion-boson mixture of ytterbium isotopes
    Phys. Rev. A 66, 021401(R) (2002)

  23. K.Enomoto, K.Hirano, M.Kumakura, Y.Takahashi, and T.Yabuzaki,
    Emission spectra of Cs-He excimers in cold helium gas
    Phys. Rev. A 66, 042505 (2002)

  24. Y.Takasu, K.Honda, K.Komori, T.Kuwamoto, M.Kumakura, Y.Takahashi, and T.Yabuzaki,
    High-density trapping of cold ytterbium atoms by an optical dipole force
    Phys. Rev. Lett. 90, 023003 (2003)

  25. K.Hirano, K.Enomoto, M.Kumakura, Y.Takahashi, and T.Yabuzaki,
    Emission spectra of Rb*Hen exciplexes in a cold 4He gas
    Phys. Rev. A 68, 012722 (2003)

  26. K.Komori, Y.Takasu, M.Kumakura, Y.Takahashi, and T.Yabuzaki,
    Injection-locking of blue laser diodes and its application to the laser cooling of neutral ytterbium atoms
    Jpn. J. Appl. Phys. 1, 42, 5059 (2003)

  27. Y.Takasu, K.Maki, K.Komori, T.Takano, K.Honda, M.Kumakura, T.Yabuzaki, and Y.Takahashi,
    Spin-singlet Bose-Einstein condensation of two-electron atoms
    Phys. Rev. Lett. 91, 040404 (2003)

  28. M.Kumakura, Y.Shirahata, Y.Takasu, Y.Takahashi, and T.Yabuzaki,
    Shaking-induced cooling of cold atoms in a magnetic trap
    Phys. Rev. A 68, 021401(R) (2003)

  29. K.Enomoto, K.Hirano, M.Kumakura, Y.Takahashi, and T.Yabuzaki,
    Emission spectra of alkali-metal(K,Na,Li)-He exciplexes in cold helium gas
    Phys. Rev. A 69, 012501 (2004)

  30. Y. Takahashi, Y. Takasu, K. Maki, K. Komori, T. Takano, K. Honda, A. Yamaguchi, Y. Kato, M. Mizoguchi, M. Kumakura, and T.Yabuzaki,
    Bose-Einstein condensation of ytterbium atoms
    Laser Phys. 14, 621 (2004)

  31. M. Hori, J. Eades, E. Widmann, T. Yamazaki, R.S. Hayano, T. Ishikawa, H.A. Torii, T. von Egidy, F.J. Hartmann, B. Ketzer, C. Maierl, R. Pohl, M. Kumakura, N. Morita, D. Horvath, and I. Sugai,
    Populations and lifetimes in the v = n - l - 1 = 2 and 3 metastable cascades of pbarHe+ measured by pulsed and continuous antiproton beams
    Phys. Rev. A 70, 012504 (2004)

  32. Y. Takasu, K. Komori, K. Honda, M. Kumakura, T. Yabuzaki, and Y. Takahashi,
    Photoassociation spectroscopy of laser-cooled ytterbium atoms
    Phys. Rev. Lett. 93, 123202 (2004)

  33. M. Takeuchi, S. Ichihara, T. Takano, M. Kumakura, T. Yabuzaki, and Y. Takahashi,
    Spin Squeezing via One-Axis Twisting with Coherent Light
    Phys. Rev. Lett. 94, 023003 (2005)

  34. M. Kumakura, T. Hirotani, M. Okano, T. Yabuzaki, and Y. Takahashi,
    Topological creation of a multiply charged quantized vortex in the Rb Bose-Einstein condensate
    Laser Phys. 16, 718 (2006)

  35. J. Kobayashi, Y. Izumi, M. Kumakura, and Y. Takahashi,
    All-optical formation of molecules with spin degree of freedom in an atomic Bose-Einstein condensate
    Laser Phys. 16, 371 (2006)

  36. J. Kobayashi, Y. Izumi, M. Kumakura, and Y. Takahashi,
    Stable all-optical formation of Bose-Einstein condensate using pointing-stabilized optical trapping beams
    Appl. Phys. B 83, 21 (2006)

  37. M. Takeuchi, T. Takano, S. Ichihara, A. Yamaguchi, M. Kumakura, T. Yabuzaki and Y. Takahashi,
    Fast polarimetry system for the application to spin quantum non-demolition measurement
    Appl. Phys. B 83, 33 (2006)

  38. M. Takeuchi, T. Takano, S. Ichihara, Y. Takasu, M. Kumakura, T. Yabuzaki and Y. Takahashi,
    Paramagnetic Faraday rotation with spin-polarized ytterbium atoms
    Appl. Phys. B 83, 107 (2006)

  39. S. Tojo, M. Kitagawa, K. Enomoto, Y. Kato, Y. Takasu, M. Kumakura, and Y. Takahashi,
    High-resolution photoassociation spectroscopy of ultracold ytterbium atoms by using the intercombination transition
    Phys. Rev. Lett. 96, 153201 (2006)

  40. M. Kumakura, T. Hirotani, M. Okano, Y. Takahashi, and T. Yabuzaki,
    Topological formation of a multiply charged vortex in the Rb Bose-Einstein condensate: Effectiveness of the gravity compensation
    Phys. Rev. A 73, 063605 (2006)

  41. T. Fukuhara, Y. Takasu, M. Kumakura, and Y. Takahashi,
    Degenerate fermi gases of ytterbium
    Phys. Rev. Lett. 98, 030401 (2007)

  42. M. Takeuchi, S. Ichihara, T.Takano, M. Kumakura, and Y. Takahashi,
    Spin noise measurement with diamagnetic atoms
    Phys. Rev. A 75, 063827 (2007)

  43. M. Okano, H. Yasuda, K. Kasa, M. Kumakura, Y. Takahashi,
    Splitting of a quadruply quantized vortex in the Rb Bose-Einstein condensate
    J. Low Temp. Phys. 148, 447 (2007)

  44. T. Isoshima, M. Okano, H. Yasuda, K. Kasa, J. A. M. Huhtamaki, M. Kumakura, and Y. Takahashi,
    Spontaneous splitting of a quadruply charged vortex
    Phys. Rev. Lett. 99, 200403 (2007)

  45. J. Kobayashi, Y. Izumi, K. Enomoto, M. Kumakura, and Y. Takahashi,
    Spinor molecule in atomic Bose-Einstein condensate
    Appl. Phys. B 95, 37 (2009)

  46. J. Kobayashi, K. Shibata, T. Aoki, M. Kumakura, and Y. Takahashi,
    Fictitious magnetic resonance by quasi-electrostatic field
    Appl. Phys. B 95, 361 (2009)

  47. M. Kumakura,
    Phase manipulation of a Bose-Einstein condensate in an atomic gas
    Oyo Buturi 82, 773 (2013)

  48. Y. Takahashi, J. Suzuki, N. Yoneyama, Y. Tokawa, N. Suzuki, F. Matsushima, M. Kumakura, M. Ashida, and Y. Moriwaki,
    Magnetic trapping of superconducting submicron particles produced by laser ablation in superfluid helium
    Appl. Phys. Express 10, 022701 (2017)

  49. K. Masuda, S. Nakano, D. Barada, M. Kumakura, K. Miyamoto, and T. Omatsu,
    Azo-polymer film twisted to form a helical surface relief by illumination with a circularly polarized Gaussian beam
    Opt. Express 25, 12499 (2017)

  50. Y. Takahashi, J. Naoi, K. Yamaguchi, M. Kumakura, M. Ashida, F. Matsushima, and Y. Moriwaki,
    Property of magnetic trapping of superconducting sub-micron particles
    Proc. SPIE 10252, Optical Manipulation Conference, 102521H (2017)

  51. M. Kumakura, A. Kinan, and T. Moriyasu,
    Influence of dilution with organic solvents on emission spectra of CdSe/ZnS quantum dots
    Proc. SPIE 10252, Optical Manipulation Conference, 1025219 (2017)

  52. J. Naoi, Y. Takahashi, M. Takamune, Y. Nakamura, M. Kumakura, M. Ashida, F. Matsushima, Y. Moriwaki,
    Property of magnetic trapping of superconducting sub-micron particles,
    Proc. SPIE 10712, OpticalManipulation Conference, 107120K (2018))

  53. M. Kumakura, A. Kinan, T. Moriyasu,
    Dispersion of quantum dots into gases toward their optical manipulation,
    Proc. SPIE 10712, Optical Manipulation Conference, 107121I (2018)

  54. M. Kumakura, D. Koide, T. Shimomura, Y. Baba, T. Takiyama, T. Kameyama, T. Torimoto and T. Moriyasu,
    Non-destructive dispersion of quantum dots into gases,
    J. Phys.: Conf. Ser. 1220, 012039 (2019)

  55. M. Kumakura, Y. Baba, T. Shimomura, T. Takiyama, T. Kameyama, T. Torimoto, and T. Moriyasu,
    Non-destructive dispersion of quantum dots into buffer gases toward their optical manipulation,
    Proc. SPIE 11141, 1114101-161 (2019)

  56. M. Takamune, J. Naoi, S. Sasaki, M. Kumakura, M. Ashida, Y. Moriwaki,
    What will be done with the magnetically trapped superconducting particle?,
    Proc. SPIE 11141, 1114101-169 (2019)

  57. M. Ashida, J. Naoi, M. Takamune, Y. Takahashi, S. Sasaki, M. Kumakura, Y. Moriwaki,
    Optical manipulation of magnetically trapped superconducting micro particles in superfluid helium,
    Proc. SPIE 11083, 110831G (2019)

  58. T. Moriyasu, A. Kinan, Y. Baba, M. Kumakura,
    Emission spectral change of CdSe/ZnS quantum dots caused by the dilution with organic solvents,
    J. Lumin. 221, 117089 (2020)

  59. S. Sasaki, J. Naoi, M. Takanune, D. Kondo, M. Kumakura, M. Ashida, and Y. Moriwaki,
    Observation of Mie scattering from a superconducting micro-particle,
    Proc. SPIE 11522, 115220P (2020)

  60. M. Kumakura, T. Shimomura, R. Asano, G. Nozue, K. Yamamoto, and T. Moriyasu,
    Manipulation of CdSe/ZnS quantum dots in room-temperature fluid with an inhomogeneous electric field and optical excitation,
    Proc. SPIE 11522, 115220V (2020)

  61. M. Takamune, S. Sasaki, D. Kondo, J. Naoi, M. Kumakura, M. Ashida, and Y. Moriwaki,
    In situ size measurement of a magnetically trapped single superconducting microparticle by Mie scattering,
    Appl. Phys. Express 15, 012007 (2022)

  62. M. Kumakura,
    Manipulation of quantum dots in a room temperature liquid using optical excitation and a static electric field: Toward their separation or concentration,
    Chemical Industry 73(12), 742 (2022) * in Japanese

  63. M. Ashida,S. Sasaki, J. Naoi, M. Takamune, D. Kondo, Y. Takahashi, M. Kumakura, Y. Moriwaki,
    What will be done by optical manipulation of magnetically trapped superconducting micro-particles,
    Proc. SPIE 12606, 126060W (2023)

  64. S. Sasaki, J. Naoi, M. Takamune, D. Kondo, Y. Takahashi, M. Kumakura, M. Ashida, and Y. Moriwaki,
    Damped oscillation of a magnetically-trapped superconducting micro-particle in superfluid helium: measurement of viscosity based on a hydrodynamic analysis,
    Appl. Phys. Express 16, 082003 (2023)

  65. T. Moriyasu, M. Tani, H. Kitahara, T. Furuya, J. Afalla, T. Kohmoto, D. Koide, H. Sato, M. Kumakura,
    Photocarrier dynamics in thick Si film studied by optical pump-terahertz probe spectroscopy,
    Opt. Commun. 559, 130405 (2024)


Mitsutaka KUMAKURA
University of Fukui
Last Update: 29 Mar. 2024