New measurement on photon yields from air and the application to the energy estimation of primary cosmic rays

Nagano, M.; Kobayakawa, K.; Sakaki, N.; Ando, K.

doi:10.1016/j.astropartphys.2004.08.002

“…with p = 800 hPa amounts to about 2%. Nagano et al report directly the values for F Y λ at sea level for 0.85 MeV electrons [30], however, only 10 contributing emission bands are listed. For comparing the results of all authors, 0.85 MeV electrons are chosen as exciting particles, so the ionization energy deposit is dE/dX = 0.1677 MeV/kg·m −2 [24].…”

Section: Comparison With Measurementsmentioning

confidence: 99%

“…Wavelength-dependent results of fluorescence yield measurements have been provided in three publications [14,30,31] λ (p, T ) and ε s.l. E dep given explicitly in [14] are not reproduced by the calculations shown here, see Table 4.…”

Section: Comparison With Measurementsmentioning

confidence: 99%

Impact of varying atmospheric profiles on extensive air shower observation: atmospheric density and primary mass reconstruction

Keilhauer

¹

,

Blümer

²

,

Engel³

et al. 2004

Astroparticle Physics

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Several experiments measure the fluorescence light produced by extensive air showers in the atmosphere. This light is converted into a longitudinal shower profile from which information on the primary energy and composition is derived. The fluorescence yield, as the conversion factor between light profile measured by EAS experiments and physical interpretation of showers, has been measured in several laboratory experiments. The results, however, differ considerably. In this article, a model calculation of the fluorescence emission from relevant band systems of nitrogen in dependence on wavelength and atmospheric conditions is presented. Different calculations are compared to each other in combination with varying input parameters. The predictions are compared with measurements and the altitude-dependence of the fluorescence yield is discussed in detail. PACS: 96.40.Pq

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“…While Nagano et al [30] list A and B parameters for each of their 10 wavelengths between 300 and 400 nm, Kakimoto et al [34] just provide one set of parameters A 1,2 and B 1,2 for the total fluorescence yield between 300 and 400 nm. Both approaches predict similar height dependences, see Fig.…”

Section: Altitude Dependencementioning

confidence: 99%

Impact of varying atmospheric profiles on extensive air shower observation: Fluorescence light emission and energy reconstruction

Keilhauer

¹

,

Blümer

²

,

Engel³

et al. 2006

Astroparticle Physics

View full text Add to dashboard Cite

Several experiments measure the fluorescence light produced by extensive air showers in the atmosphere. This light is converted into a longitudinal shower profile from which information on the primary energy and composition is derived. The fluorescence yield, as the conversion factor between light profile measured by EAS experiments and physical interpretation of showers, has been measured in several laboratory experiments. The results, however, differ considerably. In this article, a model calculation of the fluorescence emission from relevant band systems of nitrogen in dependence on wavelength and atmospheric conditions is presented. Different calculations are compared to each other in combination with varying input parameters. The predictions are compared with measurements and the altitude-dependence of the fluorescence yield is discussed in detail. PACS: 96.40.Pq

show abstract

“…The differences of past measurements reported at the 27th ICRC (M1) [9] and the present ones (M2) are summarized as follows;…”

Section: Backgrounds and The Difference From Our Past Measurementsmentioning

confidence: 99%

Photon yields from nitrogen gas and dry air excited by electrons

Nagano

¹

,

Kobayakawa

²

,

Sakaki

³

et al. 2003

Astroparticle Physics

View full text Add to dashboard Cite

New measurement on photon yields from air and the application to the energy estimation of primary cosmic rays

Cited by 118 publications

References 11 publications

Impact of varying atmospheric profiles on extensive air shower observation: atmospheric density and primary mass reconstruction

Impact of varying atmospheric profiles on extensive air shower observation: atmospheric density and primary mass reconstruction

Impact of varying atmospheric profiles on extensive air shower observation: Fluorescence light emission and energy reconstruction

Photon yields from nitrogen gas and dry air excited by electrons

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