Pion production excitation functions in proton-nucleus collisions from the absolute threshold to 500 MeV

Mårtensson, Johan; Кузнецов, А. А.; Murin, Yu.; Avdeichikov,; Sutera, C.M.; Sperduto, M. L.; Palazzolo, F; Bellini, V.; Løvhøiden, G.; Guttormsen, M.; Amirelmi, S; Thorsteinsen, T.F.; Nybo, Kristie; Julien, J.; Westerberg, L.; Veldhuizen, E.J. van; Romański, J.; Ericsson, Göran; Ekström, C.; Whitlow, Harry J.; Öskarsson, A.; Norén, Bertil; Jakobsson, B.; Ghetti, R.; Fokin, A. G.; Elmér, R.; Carlén, L.; Berg, M.

doi:10.1103/physrevc.62.014610

Cited by 14 publications

(6 citation statements)

References 19 publications

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“…Inclusion of α-particle as projectile and He nuclei as targets will change the positronelectron ratio significantly (about 10 − 15%) as discussed below. Fermi motion of nucleons and multiple nucleonic interactions in the nucleus are known to significantly affect pion production near the threshold and in the resonance region (T p < 3 GeV; Crawford et al 1980;Mårtensson et al 2000); we acknowledge need for separate treatment of p−He, α − p, and α−He interactions in the future. We note that there is no clear experimental method separating the four components, especially at lower energies (T p < 20 GeV).…”

Section: Introductionmentioning

confidence: 99%

Parameterization of Gamma, e^+/- and Neutrino SpectraProduced by p-p Interaction in Astronomical Environment

Kamae¹,

Karlsson²,

Mizuno³

et al. 2006

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We present the yield and spectra of stable secondary particles (γ, e ± , ν e , νe , ν µ , and νµ ) of p−p interaction in parameterized formulae to facilitate calculations involving them in astronomical environments. The formulae are derived from the up-to-date p−p interaction model by Kamae et al. (2005), which incorporates the logarithmically rising inelastic cross section, the diffraction dissociation process, and the Feynman scaling violation. To improve fidelity to experimental data in lower energies, two baryon resonance contributions have been added: one representing ∆(1232) and the other representing multiple resonances around 1600 MeV/c 2 . The parametrized formulae predict that all secondary particle spectra be harder by about 0.05 in power-law indices than that of the incident proton and their inclusive cross-sections be larger than those predicted by p − p interaction models based on the Feynman scaling.

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Section: Introductionmentioning

confidence: 99%

Parameterization of Gamma, e^+/- and Neutrino SpectraProduced by p-p Interaction in Astronomical Environment

Kamae¹,

Karlsson²,

Mizuno³

et al. 2006

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show abstract

“…19a for the case of proton- 14 N reaction, 42) like other proton-nucleus reactions, reasonably intense pions can be produced with the help of nucleon Fermi energy inside the target nucleus. Here, both pion-energy-integrated pion-angle dependence 42) in Fig. 19a and emission-angle-integrated pion-energy dependence 43) are shown in Fig.…”

Section: Perspectives Of Cam Radiography Development In the Near Futurementioning

confidence: 99%

“…16 and 19a/19b from the data of references. 39,42,43) Then, pion yields are estimated as listed in Table 3. For δ E π and δ Ω π , we assumed the use of LΩ type optics described later.…”

Section: Perspectives Of Cam Radiography Development In the Near Futurementioning

confidence: 99%

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Radiography with cosmic-ray and compact accelerator muons; Exploring inner-structure of large-scale objects and landforms

Nagamine

2016

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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Cosmic-ray muons (CRM) arriving from the sky on the surface of the earth are now known to be used as radiography purposes to explore the inner-structure of large-scale objects and landforms, ranging in thickness from meter to kilometers scale, such as volcanic mountains, blast furnaces, nuclear reactors etc. At the same time, by using muons produced by compact accelerators (CAM), advanced radiography can be realized for objects with a thickness in the sub-millimeter to meter range, with additional exploration capability such as element identification and bio-chemical analysis. In the present report, principles, methods and specific research examples of CRM transmission radiography are summarized after which, principles, methods and perspective views of the future CAM radiography are described.

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“…8.1), the contribution of pions to the momentum and energy transfer may be comparable to that of nucleons. This is because pions, due to the low production threshold can be produced and reabsorbed several times during the reaction (threshold for charged pion production in free nucleon -nucleon collision is equal to about 289 MeV; inside nucleus, it can be decreased even up to about 141 MeV [56], due to the Fermi motion). Thus they influence the whole dynamical evolution of the reaction.…”

Section: Parametrizationmentioning

confidence: 99%

Pion Production in Proton Induced Spallation Reactions in the Energy Range of Few Gev Order

Kowalczyk

2009

Int. J. Mod. Phys. A

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Our understanding of physical phenomena is expressed as modelling. At present, the broadest platform for such modelling is quantum mechanics approach. Unfortunately, many -body systems are usually an extreme challenge for existing methods of quantum mechanics. One has to rely on rather simple, much more straight formed concepts. In this Chapter, such general basic concepts will be shown as ingredients of typical models of nuclear reaction.Several microscopic models have been constructed in order to describe the first stage of proton -nucleus reaction. All of them have the same basis, they describe the reaction as a cascade of nucleon -nucleon collisions, but employing different assumptions. The main difference concerns implemented potential of nucleon -nucleus interaction. One can distinguish the simplest models, which neglect features of the mean field dynamics and employ constant static potential, like a class of Intra -Nuclear Cascade (INC) models. Other, more sophisticated approaches comprise dynamically changing field and minimal fluctuations obtained due to use of test particle method, i.e. models based on Boltzmann -Uehling -Uhlenbeck (BUU) transport equation. There are also models, which include real fluctuations and particles correlations, employing two-and three-body potentials, e.g. Quantum Molecular Dynamics models. The main ideas of the different types of nuclear reaction approaches are described below.In this Chapter, devoted for model-like approach of investigation of nucleon -nucleus reactions, also so-called percolation model is presented. This rather basic model describes fragment mass distributions very well (Section 2.3). 9

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Pion production excitation functions in proton-nucleus collisions from the absolute threshold to 500 MeV

Cited by 14 publications

References 19 publications

Parameterization of Gamma, e^+/- and Neutrino SpectraProduced by p-p Interaction in Astronomical Environment

Parameterization of Gamma, e^+/- and Neutrino SpectraProduced by p-p Interaction in Astronomical Environment

Radiography with cosmic-ray and compact accelerator muons; Exploring inner-structure of large-scale objects and landforms

Pion Production in Proton Induced Spallation Reactions in the Energy Range of Few Gev Order

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