Air Showers of Size Greater than 105 Particles: (2) Čerenkov Radiation Accompanying the Showers

Brennan, M. H.; Malos, J.; Millar, D. D.; Wallace, C. S.

doi:10.1038/182973a0

Cited by 14 publications

(10 citation statements)

References 7 publications

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“…The Cherenkov light emission from the charged particle component of an air shower provides an integrated measurement of the longitudinal development [3,4]. One approach is to sample the Cherenkov lateral distribution, the photon density as a function of distance from the air shower core.…”

Section: Introductionmentioning

confidence: 99%

A measurement of the cosmic ray spectrum and composition at the knee

Fowler

Fortson

Jui

et al. 2001

Astroparticle Physics

126

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The energy spectrum and primary composition of cosmic rays with energy between 3 × 10 14 and 3 × 10 16 eV have been studied using the CASA-BLANCA detector. CASA consisted of 957 surface scintillation stations; BLANCA consisted of 144 angle-integrating Cherenkov light detectors located at the same site. CASA measured the charged particle distribution of air showers, while BLANCA measured the lateral distribution of Cherenkov light. The data are interpreted using the predictions of the CORSIKA air shower simulation coupled with four different hadronic interaction codes.The differential flux of cosmic rays measured by BLANCA exhibits a knee in the range of 2-3 PeV with a width of approximately 0.5 decades in primary energy. The power law indices of the differential flux below and above the knee are −2.72 ± 0.02 and −2.95 ± 0.02, respectively.We present our data both as a mean depth of shower maximum and as a mean nuclear mass. A multi-component fit using four elemental species suggests the same composition trends exhibited by the mean quantities, and also indicates that QGSJET and VENUS are the preferred hadronic interaction models. We find that an initially mixed composition turns lighter between 1 and 3 PeV, and then becomes heavier with increasing energy above 3 PeV.

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Section: Introductionmentioning

confidence: 99%

A measurement of the cosmic ray spectrum and composition at the knee

Fowler

Fortson

Jui

et al. 2001

Astroparticle Physics

126

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“…footnotes 13 and 69) and also against his "(not always totally voluntary) generosity" (for want of a much better way to say that some of his works and/or ideas were sometimes written up by others without due acknowledgement and not always with his consent). 41 which, in some of these cases, would have been and presumably surely still would be beyond the relevant co-authors 42 perhaps also see footnote 93 and the text leading up to it 43 see fig. 2 44 I recall a former colleague's telling me some time ago that, during his Hons year, he and fellow Hons students steered a conversation with Chris in several directions without being able to find a topic where Chris was out of his depth.…”

Section: Collegiality Generosity and Perhaps Naivetymentioning

confidence: 99%

“…He would possibly be embarrassed and think it irrelevant that I raise this. I suspect that he had a quiet purpose about advancing knowledge and understanding, and that his getting due credit was -to him -pretty much secondary 42 .…”

Section: Collegiality Generosity and Perhaps Naivetymentioning

confidence: 99%

“…Max Brennan [40] worked with Chris (and others, including Mike Rathgeber) on data processing in the early cosmic ray experiments in Sydney [41,43,45,42,44,292] 221 , and was likewise involved with SILLIAC [73, p64, p70] 222 . Max talks of the statistical distributions, Chris's (early [Bayesian]) data analysis and the contemporary set-up and equipment.…”

Section: This Issue's Authors and Their Papersmentioning

confidence: 99%

“…0.2.5 leading to and around footnote 163. 131 In his notes, Chris had this paper [42] listed with M. H. Rathgeber as an additional (fourth and second last) author. But Max Brennan (from sec.…”

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Foreword re C. S. Wallace

Dowe

2008

The Computer Journal

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1 see, e.g., [40] and sec. 0.3.1 (Brennan) 2 see also [73, pp85-86] and fig. 4 3 see [104] [40, sec. 1] and, e.g., [27, 28] 4 see also [63] and sec. 0.3.1 5 see [258] (and [288]) and perhaps also [247] [73, Appendix 3, pp145-146 and p154] 6 see footnote 213 and text around it 7 in more recent times, some years after Chris stepped down as Head, said group (moved from the Faculty of Science to the Faculty of Computing and I.T. and then later) became part of the School of Computer Science and Software Engineering and subsequently (since Chris's death) now part of the Clayton School of Information Technology. The word 'Information' has returned, although its meaning might possibly have changed since the 1960s. See also [213] and perhaps also fig. 4. 8 perhaps see also pointers from footnote 36 9 and Master's students (e.g.

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The lateral distribution of the Čerenkov radiation in extensive air showers

Sitte¹

1962

Nuovo Cim

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Air Showers of Size Greater than 105 Particles: (2) Čerenkov Radiation Accompanying the Showers

Cited by 14 publications

References 7 publications

A measurement of the cosmic ray spectrum and composition at the knee

A measurement of the cosmic ray spectrum and composition at the knee

Foreword re C. S. Wallace

The lateral distribution of the Čerenkov radiation in extensive air showers

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