On the Nature of Cosmic-Ray Particles

Nishina, Yasuzo; Takeuchi, M.; Ichimiya, T.

doi:10.1103/physrev.52.1198

Cited by 62 publications

(16 citation statements)

References 6 publications

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“…Such particles were believed to be neither the proton nor the electron (positron), presumably having a mass between that of the proton and the electron. In the same year, similar findings were reported by other groups [9,10,11]. Among them, two groups succeeded in determining the mass of such intermediate particles.…”

Section: Discovery Of the "Mesotron"supporting

confidence: 83%

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Interplay between Yukawa and Tomonaga in the Birth of Mesons

Yamazaki

2008

Nuclear Physics A

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Light is shed on the early stage in the birth of Yukawa's meson theory, particularly on the interplay between Yukawa and Tomonaga in 1933. The discovery of the muon by Nishina' group in 1937 is also reviewed. It is pointed out that Heisenberg's attempt to explain the nuclear force in terms of the Heitler-London scheme, overcome by Yukawa and abandoned since then, is now being revived as a mechanism for a super strong nuclear force caused by a migrating realK meson.

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Section: Discovery Of the "Mesotron"supporting

confidence: 83%

“…Thus, it is fair to say that the two experiments [10,11] were nearly of the same quality and significance. Nevertheless, the experiment of Nishina's group has hardly been recognized in the world.…”

Section: Discovery Of the "Mesotron"mentioning

confidence: 95%

Interplay between Yukawa and Tomonaga in the Birth of Mesons

Yamazaki

2008

Nuclear Physics A

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“…They concluded that, given its absorption characteristics, the component could consist neither of protons or electrons and that there must be a charged particle of intermediate mass, which they called the 'heavy electron'. Independent observations by Street &Stevenson (1937) andNishina et al (1937) led to the same conclusion. A summary of the observations put the mass between 100 and 400 m e , with a most probable figure of 200 m e .…”

Section: T M mentioning

confidence: 55%

Sir Clifford Charles Butler. 20 May 1922 – 30 June 1999

Butterworth

2001

Biogr. Mems Fell. R. Soc.

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Clifford Butler was born in Earley, Reading, on 20 May 1922 to Charles and Olive Butler. An only child, he went to Reading School in 1932, having won a Berkshire County Council Educational Scholarship worth £15 per year. In addition to his academic work he was active in the Scouts and was a House Prefect (East House). Leaving school he went to Reading University to take physics, as did Kathleen Collins, whom he was to marry in 1947. Graduating in 1942 with a first–class BSc (Special) he stayed on as a demonstrator, his National Service taking the form of teaching radio as part of the State scheme to produce radar physicists, and acted part–time as a physicist at the Royal Berkshire Hospital. Kathleen went to work at the Road Research Laboratory. Butler found time, largely in the evenings, to undertake research for a PhD in electronic diffraction in the laboratory of Professor J.A. Crowther. He worked very closely with his thesis supervisor Dr Tom Rymer and it was there that he started to demonstrate his considerable skills in technical matters. His thesis, ‘some factors affecting precise measurement in electron diffraction’, was presented in April 1946 and was a detailed study, covering both technical and theoretical aspects, of how to improve the use of Debye–Scherrer electron–diffraction photographs to investigate crystal structure. The research on which it was based initiated four very different papers and led Crowther to predict, immediately after Butler's PhD examination, the latter's Fellowship of The Royal Society.

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“…In 1937 three groups, S. H. Neddermeyer and C. D. Anderson [13]; Nishina, M. Takeuchi and T. Ichimiya [14,15]; J. C. Street and E. C. Stevenson [16], discovered a new particle with mass consistent with that of Yukawa's particle in the cosmic ray by cloud-chamber experiments. (Fig.3) to Yukawa at Osaka Imperial University for an informal discussion meeting on mesons among theoretical and cosmic-ray physicists [17].…”

Section: The Cosmic-ray Meson (Muon) Was Discovered By Three Groups Imentioning

confidence: 99%

The Legacy of Hideki Yukawa, Sin-itiro Tomonaga, and Shoichi Sakata: Some Aspects from their Archives

Konuma¹,

Bandō²,

Gotoh³

et al. 2014

Proceedings of the 12th Asia Pacific Physics Conference (APPC12)

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Hideki Yukawa, Sin-itiro Tomonaga and Shoichi Sakata pioneered nuclear and particle physics and left enduring legacies. Their friendly collaboration and severe competition laid the foundation to bring up the active postwar generation of nuclear and particle physicists in Japan. In this presentation we illustrate milestones of nuclear and particle physics in Japan from 1930's to mid-1940's which have been clarified in Yukawa Hall Archival Library, Tomonaga Memorial Room and Sakata Memorial Archival Library.

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On the Nature of Cosmic-Ray Particles

Cited by 62 publications

References 6 publications

Interplay between Yukawa and Tomonaga in the Birth of Mesons

Interplay between Yukawa and Tomonaga in the Birth of Mesons

Sir Clifford Charles Butler. 20 May 1922 – 30 June 1999

The Legacy of Hideki Yukawa, Sin-itiro Tomonaga, and Shoichi Sakata: Some Aspects from their Archives

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