1.

Record Nr.

UNINA9910878068603321

Autore

Uchaikin Vladimir V

Titolo

Electron-Photon Cascades : A Probabilistic Point of View / / by Vladimir V. Uchaikin

Pubbl/distr/stampa

Singapore : , : Springer Nature Singapore : , : Imprint : Springer, , 2024

ISBN

9789819975242

9789819975235

Edizione

[1st ed. 2024.]

Descrizione fisica

1 online resource (510 pages)

Collana

Nonlinear Physical Science, , 1867-8459

Disciplina

539.756

Soggetti

Particles (Nuclear physics)

Astrophysics

Nonlinear Optics

Particle Physics

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di contenuto

Introduction -- Cascade processes of high energy -- Forward (basic) equation for CP -- Backward (adjoint) equation -- Electrons and photons -- Analytical EPC theory -- EPC fluctuations theory.-Cascades in calorimeters -- SBCE method -- Monte Carlo modeling -- EAS structure -- Cherenkov radiation of EPC -- Transport in interstellar medium -- Relativistic EPC in intergalactic medium.-Conclusion: Cascade ages, similarity, universality. .

Sommario/riassunto

This book demonstrates the practical application of an alternative approach to current problems in high-energy astrophysics. In high-energy astrophysical processes, single collisions are accompanied by the appearance of many secondary particles with different properties. To describe the infinitesimal evolution of such a system at a measurement instant, as is commonly done when deriving the kinetic equation for the system with conserved number of particles, one must know either its prehistory or the infinite family of many-particle distributions. An alternative to this approach is to use an adjoint (in the sense of Lagrange) mathematical formalism, where the independent active variable is the phase position of a primary particle generating the cascade, and the dependent variable has the form of a functional of the



cascade as a whole, interpreted as the reading of some not necessarily linear (additive) detector. This approach is characterized by mathematical efficiency: no matter how many particles are formed in a cascade, the active argument of the desired functional always remains one particle. The second advantage is its generality: the formalization of the readings of the detector, which performs real measurements through the functionality of a random implementation of the cascade, allows it to be applied to a wide range of actually used devices and installations. Readers will be able to master the fundamentals of particle astrophysics in the context of the latest developments in the field. It will benefit graduate students and established researchers alike, equipping them with the knowledge and tools necessary to design and interpret their own experiments and, ultimately, to address a number of questions about the nature and origin of cosmic particles that have arisen in recent research.