@article {64,
	title = {First Observation of a (1,0) Mode Frequency Shift of an Electron Plasma at Antiproton Beam Injection},
	journal = {Phys. Rev. Lett.},
	volume = {113},
	year = {2014},
	month = {Jul},
	pages = {025001},
	abstract = {<p>The frequency shift of the center-of-mass oscillation, known as the (1,0) mode, of a trapped electron plasma and, furthermore, its time evolution were observed during the cooling of an injected antiproton beam for the first time. Here, antiprotons mixed with the electrons did not follow faster electron oscillations but contributed to the modification of the effective potential. The time evolution of the plasma temperature, deduced from the frequency shift of the excited (3,0) mode, suggested that there was an abnormal energy deposition of the antiproton beam in the electron plasma before thermalization.</p>
},
	doi = {10.1103/PhysRevLett.113.025001},
	url = {http://link.aps.org/doi/10.1103/PhysRevLett.113.025001},
	author = {Kuroda, N. and Mohri, A. and Torii, H.A. and Nagata, Y. and Shibata, M.}
}
@article {66,
	title = {Towards a spin polarized antihydrogen beam},
	journal = {Hyperfine Interactions},
	year = {2014},
	pages = {1-10},
	keywords = {Antihydrogen, Atomic beam, CPT invariance, Rydberg atom},
	issn = {0304-3843},
	doi = {10.1007/s10751-014-1016-9},
	url = {http://dx.doi.org/10.1007/s10751-014-1016-9},
	author = {Kuroda, N. and Ulmer, S. and Murtagh, D.J. and Van Gorp, S. and Nagata, Y. and Diermaier, M. and Federmann, S. and Leali, M. and Malbrunot, C. and Mascagna, V. and Massiczek, O. and Michishio, K. and Mizutani, T. and Mohri, A. and Nagahama, H. and Ohtsuka, M. and Radics, B. and Sakurai, S. and Sauerzopf, C. and Suzuki, K. and Tajima, M. and Torii, H.A. and Venturelli, L. and W{\"u}nschek, B. and Zmeskal, J. and Zurlo, N. and Higaki, H. and Kanai, Y. and Lodi-Rizzini, E. and Nagashima, Y. and Matsuda, Y. and Widmann, E. and Yamazaki, Y.}
}
@article {51,
	title = {From Synthesis To Physics of Anti-Hydrogen {\textendash} Cooling, Recombination, and Trapping of Antiprotons and Positrons},
	journal = {J. Plasma Fusion Res.},
	volume = {89},
	year = {2013},
	pages = {11},
	author = {H. Higaki and F. Robicheaux and Torii, H.A. and N. Kuroda and K. Michishio and Y. Enomoto and Y. Nagata and M.C. Fujiwara and M. Hori}
}
@article {35,
	title = {Towards the production of anti-hydrogen beams},
	journal = {AIP Conference Proceedings},
	volume = {1521},
	year = {2013},
	pages = {134-143},
	keywords = {antimatter, atomic beams, hydrogen neutral atoms, hyperfine structure, particle beam diagnostics},
	doi = {10.1063/1.4796069},
	url = {http://link.aip.org/link/?APC/1521/134/1},
	author = {H. Higaki and Y. Enomoto and N. Kuroda and K. Michishio and D. J. Murtagh and S. Ulmer and S. Van Gorp and C. H. Kim and Y. Nagata and Y. Kanai and Torii, H.A. and M. Corradini and M. Leali and E. Lodi-Rizzini and V. Mascagna and L. Venturelli and N. Zurlo and K. Fujii and M. Otsuka and K. Tanaka and H. Imao and Y. Nagashima and Y. Matsuda and B. Juh{\'a}sz and A. Mohri and Y. Yamazaki},
	editor = {Xabier Sarasola and Lutz Schweikhard and Thomas Sunn Pedersen}
}
@article {50,
	title = {Antihydrogen atom formation in a CUSP trap towards spin polarized beams},
	journal = {Hyperfine Interactions},
	volume = {212},
	year = {2012},
	pages = {31-40},
	keywords = {Antihydrogen, Atomic beam, CPT invariance, Rydberg atom},
	issn = {0304-3843},
	doi = {10.1007/s10751-012-0646-z},
	url = {http://dx.doi.org/10.1007/s10751-012-0646-z},
	author = {Kuroda, N. and Enomoto, Y. and Michishio, K. and Kim, C.H. and Higaki, H. and Nagata, Y. and Kanai, Y. and Torii, H.A. and Corradini, M. and Leali, M. and Lodi-Rizzini, E. and Venturelli, L. and Zurlo, N. and Fujii, K. and Ohtsuka, M. and Tanaka, K. and Imao, H. and Nagashima, Y. and Matsuda, Y. and Juhasz, B. and Widmann, E. and Mohri, A. and Yamazaki, Y.}
}
@article {29,
	title = {ASACUSA MUSASHI: New progress with intense ultra slow antiproton beam},
	journal = {Hyperfine Interactions},
	volume = {194},
	year = {2009},
	pages = {71-76},
	keywords = {Antihydrogen, Antiproton, Positron},
	issn = {0304-3843},
	doi = {10.1007/s10751-009-0032-7},
	url = {http://dx.doi.org/10.1007/s10751-009-0032-7},
	author = {Imao, H. and Tarek, M. and Michishio, K. and Enomoto, Y. and Shimoyama, T. and Kanai, Y. and Kuroda, N. and Mohri, A. and Higaki, H. and Saitoh, H. and Torii, H.A. and Nagata, Y. and Toyoda, H. and Matsuda, Y. and Nagashima, Y. and Yamazaki, Y.}
}
@article {31,
	title = {Atomic collision and spectroscopy experiments with ultra-low-energy antiprotons},
	journal = {Journal of Physics: Conference Series},
	volume = {185},
	year = {2009},
	pages = {012049},
	abstract = {<p>Antiproton, the antiparticle of proton, is a unique projectile in the study of atomic collision physics, which can be treated theoretically either as a {\textquoteright}negative proton{\textquoteright} or a {\textquoteright}heavy electron{\textquoteright}. Atomic capture of an antiproton will result in formation of a highly excited exotic atom. Antiprotonic helium atom has been studied intensively by means of precision laser spectroscopy, which has led to a stringent determination of antiproton mass and charge to a level of ppb. Comparison of these values with those of proton gives one of the best tests of CPT invariance, the most fundamental symmetry in physics. However, the dynamic processes of antiproton capture remain unclarified. With an aim to produce an antiproton beam at atomic-physics energies for {\textquoteright}pure{\textquoteright} collision experiments, we have so far developed techniques to decelerate, cool and confine antiprotons in vacuo, using a sequential combination of the Antiproton Decelerator (AD) at CERN, a Radio-Frequency Quadrupole Decelerator (RFQD), and an electromagnetic trap. Our recent success in stable extraction of monoenergetic ultra-slow antiprotons, about 3 {\texttimes} 10 5 in number available every 5 minutes, has opened up the possibility to study ionization and atomic capture processes between an antiproton and an atom under the single collision condition. Our design and strategy of the cross-beam experiments are presented, together with technical challenges in the detection system to identify the rare events with a reaction rate of 10 -4 .</p>
},
	url = {http://stacks.iop.org/1742-6596/185/i=1/a=012049},
	author = {Torii, H.A. and Yugo Nagata and Hiroshi Toyoda and Hiroshi Imao and Naofumi Kuroda and Victor L Varentsov and Yasunori Yamazaki and Asacusa collaboration}
}
@article {30,
	title = {Cross-beam atomic collision experiment between ultra-low-energy antiprotons and a supersonic gas jet},
	journal = {Hyperfine Interactions},
	volume = {194},
	year = {2009},
	pages = {37-43},
	keywords = {Cross-beam atomic collision, Supersonic~gas~jet, Ultra-low-energy antiprotons},
	issn = {0304-3843},
	doi = {10.1007/s10751-009-0027-4},
	url = {http://dx.doi.org/10.1007/s10751-009-0027-4},
	author = {Torii, H.A. and Nagata, Y. and Toyoda, H. and Imao, H. and Kuroda, N. and Varentsov, V.L. and Yamazaki, Y.}
}
