JAEA
  • help
  • PC | SP
  • JP | EN
          
Refine your search：     
Report No.
 - 
Clear All
Search Results: Records 1-20 displayed on this page of 45

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

High-sensitive XANES analysis at Ce L$$_{2}$$-edge for Ce in bauxites using transition-edge sensors; Implications for Ti-rich geological samples

Li, W.*; Yamada, Shinya*; Hashimoto, Tadashi; Okumura, Takuma*; Hayakawa, Ryota*; Nitta, Kiyofumi*; Sekizawa, Oki*; Suga, Hiroki*; Uruga, Tomoya*; Ichinohe, Yuto*; et al.

Analytica Chimica Acta, 1240, p.340755_1 - 340755_9, 2023/02

https://doi.org/10.1016/j.aca.2022.340755

no abstracts in English

Journal Articles

Pole position of $$Lambda(1405)$$ measured in $$d(K^-,n)piSigma$$ reactions

Aikawa, Shu*; Hashimoto, Tadashi; Tanida, Kiyoshi; 73 of others*

Physics Letters B, 837, p.137637_1 - 137637_8, 2023/02

https://doi.org/10.1016/j.physletb.2022.137637

Journal Articles

Measurements of strong-interaction effects in kaonic-helium isotopes at sub-eV precision with X-ray microcalorimeters

Hashimoto, Tadashi; Tanida, Kiyoshi; 68 of others*

Physical Review Letters, 128(11), p.112503_1 - 112503_6, 2022/03

https://doi.org/10.1103/PhysRevLett.128.112503
 Times Cited Count：2 Percentile：0(Physics, Multidisciplinary)

Journal Articles

Deexcitation dynamics of muonic atoms revealed by high-precision spectroscopy of electronic $$K$$ X rays

Okumura, Takuma*; Azuma, Toshiyuki*; Bennet, D. A.*; Caradonna, P.*; Chiu, I. H.*; Doriese, W. B.*; Durkin, M. S.*; Fowler, J. W.*; Gard, J. D.*; Hashimoto, Tadashi; et al.

Physical Review Letters, 127(5), p.053001_1 - 053001_7, 2021/07

https://doi.org/10.1103/PhysRevLett.127.053001
 Times Cited Count：3 Percentile：45.66(Physics, Multidisciplinary)

We observed electronic $$K$$X rays emitted from muonic iron atoms using a superconducting transition-edge-type sensor microcalorimeter. The energy resolution of 5.2 eV in FWHM allowed us to observe the asymmetric broad profile of the electronic characteristic $$K$$$$alpha$$ and $$K$$$$beta$$ X rays together with the hypersatellite $$K$$$$alpha$$ X rays around 6 keV. This signature reflects the time-dependent screening of the nuclear charge by the negative muon and the $$L$$-shell electrons, accompanied by electron side-feeding. Assisted by a simulation, this data clearly reveals the electronic $$K$$- and $$L$$-shell hole production and their temporal evolution during the muon cascade process.

Journal Articles

First observation of a nuclear $$s$$-state of a $$Xi$$ hypernucleus, $$^{15}_{Xi}{rm C}$$

Yoshimoto, Masahiro*; Fujita, Manami; Hashimoto, Tadashi; Hayakawa, Shuhei; Ichikawa, Yudai; Ichikawa, Masaya; Imai, Kenichi*; Nanamura, Takuya; Naruki, Megumi; Sako, Hiroyuki; et al.

Progress of Theoretical and Experimental Physics (Internet), 2021(7), p.073D02_1 - 073D02_19, 2021/07

https://doi.org/10.1093/ptep/ptab073
 Times Cited Count：6 Percentile：77.07(Physics, Multidisciplinary)

Journal Articles

Observation of Coulomb-assisted nuclear bound state of $$Xi^-$$-$$^{14}$$N system

Hayakawa, Shuhei; Fujita, Manami; Hasegawa, Shoichi; Hashimoto, Tadashi; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi*; Nanamura, Takuya; Naruki, Megumi; Sako, Hiroyuki; et al.

Physical Review Letters, 126(6), p.062501_1 - 062501_6, 2021/02

https://doi.org/10.1103/PhysRevLett.126.062501
 Times Cited Count：27 Percentile：97.14(Physics, Multidisciplinary)

Journal Articles

Observation of a $$bar{K}NN$$ bound state in the $$^{3}$$He $$(K^-, Lambda p)n$$ reaction

Yamaga, Takumi*; Hashimoto, Tadashi; Tanida, Kiyoshi; 66 of others*

Physical Review C, 102(4), p.044002_1 - 044002_14, 2020/10

https://doi.org/10.1103/PhysRevC.102.044002
 Times Cited Count：10 Percentile：83.19(Physics, Nuclear)

Journal Articles

$$K^-pp$$ bound system at J-PARC

Sakuma, Fuminori*; Hashimoto, Tadashi; Tanida, Kiyoshi; 66 of others*

AIP Conference Proceedings 2249, p.020005_1 - 020005_10, 2020/07

https://doi.org/10.1063/5.0008808
 Times Cited Count：1 Percentile：74.73

Journal Articles

$$bar{K}$$-nuclear bound state at J-PARC

Sakuma, Fuminori*; Hashimoto, Tadashi; Tanida, Kiyoshi; 66 of others*

JPS Conference Proceedings (Internet), 32, p.010088_1 - 010088_8, 2020/07

https://doi.org/10.7566/JPSCP.32.010088

Journal Articles

Results of $$bar{K}NN$$ search via the $$(K^-, n)$$ reaction at J-PARC

Yamaga, Takumi*; Hashimoto, Tadashi; Tanida, Kiyoshi; 66 of others*

JPS Conference Proceedings (Internet), 26, p.023008_1 - 023008_6, 2019/11

https://doi.org/10.7566/JPSCP.26.023008

Journal Articles

$$Lambda(1405)$$ spectroscopy via the in-flight $$d(K^-, n)$$ reaction at the J-PARC K1.8BR

Kawasaki, Shingo*; Hashimoto, Tadashi; Tanida, Kiyoshi; 72 of others*

JPS Conference Proceedings (Internet), 26, p.022009_1 - 022009_5, 2019/11

https://doi.org/10.7566/JPSCP.26.022009

Journal Articles

Spectroscopic study of the $$Lambda$$(1405) resonance via the $$d(K^-, n)$$ reaction at J-PARC

Asano, Hidemitsu*; Hashimoto, Tadashi; Tanida, Kiyoshi; 72 of others*

AIP Conference Proceedings 2130, p.040018_1 - 040018_6, 2019/07

https://doi.org/10.1063/1.5118415
 Times Cited Count：3 Percentile：76.59

Journal Articles

"$$K^-pp$$", a $$bar K$$-meson nuclear bound state, observed in $$^3$$He($$K^-,Lambda p)n$$ reactions

Hashimoto, Tadashi; Tanida, Kiyoshi; 67 of others*

Physics Letters B, 789, p.620 - 625, 2019/02

https://doi.org/10.1016/j.physletb.2018.12.058
 Times Cited Count：30 Percentile：95.94(Astronomy & Astrophysics)

We observed a distinct peak in the $$Lambda p$$ invariant mass spectrum of $$^{3}{rm He}(K^-, , Lambda p)n$$, well below $$m_K + 2m_p$$, $$i.e.$$, the mass threshold of the $$K^-$$ to be bound to two protons. By selecting a relatively large momentum-transfer region $$q = 350 sim650$$ MeV/$$c$$, one can clearly separate the peak from the quasi-free process,$$overline{K}N rightarrow overline{K}N$$ followed by the non-resonant absorption by the non-resonant absorption by the two spectator-nucleons $$overline{K}NN rightarrow Lambda N$$. We found that the simplest fit to the observed peak gives us a Breit-Wignerpole position at $$B_{rm {it Kpp}} = 47 pm 3 , (stat.) ,^{+3}_{-6},(sys.)$$ MeV having a width $$Gamma_{rm {it Kpp}} = 115 pm 7 , (stat.),^{+10}_{-20} ,(sys.)$$ MeV, and the $$S$$-wave Gaussian reaction form-factor parameter $$Q_{rm {it Kpp}} = 381 pm 14 , (stat.),^{+57}_{-0} ,(sys.)$$MeV/$$c$$, as a new form of the nuclear bound system with strangeness -"$$K^-pp$$".

Journal Articles

Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment

Ekawa, Hiroyuki; Ashikaga, Sakiko; Hasegawa, Shoichi; Hashimoto, Tadashi; Hayakawa, Shuhei; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi; Kimbara, Shinji*; Nanamura, Takuya; et al.

Progress of Theoretical and Experimental Physics (Internet), 2019(2), p.021D02_1 - 021D02_11, 2019/02

https://doi.org/10.1093/ptep/pty149
 Times Cited Count：19 Percentile：83.3(Physics, Multidisciplinary)

Journal Articles

Kaonic-atom X-ray spectroscopy with superconducting microcalorimeters

Hashimoto, Tadashi; Tanida, Kiyoshi; 45 of others*

JPS Conference Proceedings (Internet), 17, p.072001_1 - 072001_4, 2017/07

https://doi.org/10.7566/JPSCP.17.072001

Journal Articles

Spectroscopic study of hyperon resonance below $$bar{K}N$$ threshold via the $$d(K^-,n)$$ reaction

Inoue, Kentaro*; Hashimoto, Tadashi; Tanida, Kiyoshi; 69 of others*

JPS Conference Proceedings (Internet), 17, p.072003_1 - 072003_4, 2017/07

https://doi.org/10.7566/JPSCP.17.072003

Journal Articles

Beamline test of a transition-edge-sensor spectrometer in preparation for kaonic-atom measurements

Hashimoto, Tadashi*; Tanida, Kiyoshi; 49 of others*

IEEE Transactions on Applied Superconductivity, 27(4), p.2100905_1 - 2100905_5, 2017/06

https://doi.org/10.1109/TASC.2016.2646374
 Times Cited Count：12 Percentile：58.78(Engineering, Electrical & Electronic)

Journal Articles

Spectroscopic experiment of $$Lambda(1405)$$ via the in-flight $$d(K^-, n)$$ reaction at J-PARC K1.8BR

Kawasaki, Shingo*; Hashimoto, Tadashi*; Tanida, Kiyoshi; 59 of others*

JPS Conference Proceedings (Internet), 13, p.020018_1 - 020018_5, 2017/02

https://doi.org/10.7566/JPSCP.13.020018

Journal Articles

Optics tuning for beam collimation in the J-PARC 3-50 beam transport line

Harada, Hiroyuki; Meigo, Shinichiro; Shirakata, Masashi*; Sato, Yoichi*; Tamura, Fumihiko; Tejima, Masaki*; Hashimoto, Yoshinori*; Igarashi, Susumu*; Koseki, Tadashi

JPS Conference Proceedings (Internet), 8, p.012010_1 - 012010_6, 2015/09

https://doi.org/10.7566/JPSCP.8.012010

The J-PARC 3-50BT line is the beam transport line from 3-GeV rapid-cycling synchrotron (RCS) to 50-GeV main ring (MR). The RCS is the high-intensity proton accelerator, where designed beam power is 1 MW, and has the complex source of space charge effect, etc. Therefore, the uncontrolled emittance growth and beam halo increase nonlinearly with the increasing the beam power. Additionally, the physical aperture of MR with 81 $$pi$$ mm mrad is smaller than that of RCS with 486 $$pi$$ mm mrad. Therefore, the 3-50BT line has the collimators in order to remove the tail or halo of the extracted beam from the RCS. The designed collimator aperture is 54 $$pi$$ mm mrad. It is required to measure and optimize the optics parameters in the collimator area for taking full advantage of the beam collimation. Especially, it is very important to make the dispersion functions free in the collimator area and optimize the beta function. This paper will introduce the method of optics measurement and report the result of the measurement and optimization based on the simulation.

Journal Articles

Search for the deeply bound $$K^- pp$$ state from the semi-inclusive forward-neutron spectrum in the in-flight $$K^-$$ reaction on helium-3

Hashimoto, Tadashi*; Tanida, Kiyoshi; J-PARC E15 Collaboration*; 65 of others*

Progress of Theoretical and Experimental Physics (Internet), 2015(6), p.061D01_1 - 061D01_11, 2015/06

AA2015-0706.pdf:0.81MB

https://doi.org/10.1093/ptep/ptv076
 Times Cited Count：33 Percentile：85.25(Physics, Multidisciplinary)

45 (Records 1-20 displayed on this page)