CXXVII. On the decay of charged V-particles

Astbury, J. P.; Chippindale, P.; Millar, D. D.; Newth, J.A.; Page, D.I.; Rytz, A.; Sahiar, A. B.

doi:10.1080/14786441208520259

Cited by 14 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 For the charged V particles, Barker and his collaborators placed a lower limit of 10~1 0 sec and an upper limit of 10~8 sec to the mean life, 14 while Astbury and his collaborators estimated a mean life somewhat greater than 10~9 sec. 13 Our results give some information on the relative abundance of 5 particles and 7r-mesons. In the present experiment we found 4 (presumably positive) S particles entering the chamber from above and stopping in one of the plates.…”

Section: Discussionmentioning

confidence: 75%

See 1 more Smart Citation

Cloud-Chamber Observations of the Heavy Charged Unstable Particles in Cosmic Rays

et al. 1953

View full text Add to dashboard Cite

In a series of pictures taken with a multiplate cloud chamber, we have observed a number of charged unstable particles considerably heavier than 7r-mesons, of which some decay at rest (S particles) and some decay in flight (V ± particles). In each case the charged decay product is a particle of mesonic mass. From our results, which are not yet completely conclusive, it appears that most of the observed events can be explained by the two-body decay of a single kind of particle. The evidence concerning the mass of this particle, its mean life, and the nature of the neutral decay product is discussed. Our observations are compared with those of other experimenters.

show abstract

Section: Discussionmentioning

confidence: 75%

“…[8][9][10][11][12][13][14] Recently Armenteros et at. 12 and Barker et al u have published the results of measurements on 27 charged F's photographed in a magnetic cloud chamber; however, only in 18 cases were they able to determine the momentum of the secondary particle.…”

Section: Comparison With Other Experimental Results On V Particlesmentioning

confidence: 99%

Cloud-Chamber Observations of the Heavy Charged Unstable Particles in Cosmic Rays

et al. 1953

View full text Add to dashboard Cite

show abstract

“…The magnet cloud chamber a t the Jungfraujoch has been described by Astbury et al (1952) and by Newth (1954). When the photographs considered in this paper were taken, the chamber contained a wedgeshaped lead block immediately above the illuminated volume and a 12mm copper plate across its centre.…”

Section: Experimental Details and Resultsmentioning

confidence: 99%

XLIV. Cloud chamber observations of negative heavy mesons

Michaélis

Powell

1956

Philosophical Magazine

View full text Add to dashboard Cite

“…In this sense their interpretation is notably simpler than the interpretation of total intensity measurements. 5 But due to the low intensity of the heavy nuclei it is more difficult to obtain precise results.…”

Section: A General Commentsmentioning

confidence: 99%

“…R ECENT investigations [1][2][3][4][5] of the dependence of cosmic-ray intensity at high altitude upon geomagnetic latitude make it abundantly clear that there occurs a marked and rapid change in form of the integral number-magnetic rigidity spectrum of the primary radiation at a rigidity R (momentum-to-charge ratio pc/Ze) of about 1.5 X10 9 volts. In particular, 4 there appears to be a complete or nearly complete absence of primary protons in the magnetic rigidity range 1.2X10 9 volts to 0.18X10 9 volts (kinetic energy range 590 Mev to 18 Mev), and of primary alpha particles in the magnetic rigidity range 1.2X10 9 volts to 0.37X10 9 volts (kinetic energy range 700 Mev to 72 Mev).…”

Section: Introductionmentioning

confidence: 99%

Low-Momentum End of the Spectra of Heavy Primary Cosmic Rays

1954

View full text Add to dashboard Cite

Measurements of the intensity of heavy primary cosmic-ray nuclei have been made above the atmosphere by means of the new Iowa balloon-launched rocket ("rockoon") technique at geomagnetic latitudes \ = 56°, 76°, and 86°. The measuring instrument was a thin-walled, pulse-ionization chamber of 15-cm diameter. The observed data, in conjunction with geomagnetic theory, demonstrate a complete or nearly complete absence of primary heavy nuclei of Z>6 having a magnetic rigidity less than 1.5X10 9 volts (p/mc<0.S) } the result being the most significant for the C, N, O group. It is noted that this spectral cutoff occurs at closely the same magnetic rigidity, and distinctly not at the same velocity, as the previously reported cutoff in the spectra of primary protons and a particles.* Based on doctoral dissertation of R. A. Ellis, Jr., February, 1954 (unpublished).

show abstract

CXXVII. On the decay of charged V-particles

Cited by 14 publications

References 4 publications

Cloud-Chamber Observations of the Heavy Charged Unstable Particles in Cosmic Rays

Cloud-Chamber Observations of the Heavy Charged Unstable Particles in Cosmic Rays

XLIV. Cloud chamber observations of negative heavy mesons

Low-Momentum End of the Spectra of Heavy Primary Cosmic Rays

Contact Info

Product

Resources

About