CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 11039 > Article
Presentation
14 May 2019 Soft pair showers in the collision of gamma rays with laser pulses: role of pulse energy versus intensity (Conference Presentation)
Caterina Riconda, Fabien Niel, M. Grech, François Amiranoff, Mathieu Lobet
Author Affiliations +
Proceedings Volume 11039, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers IV; 110390X (2019) https://doi.org/10.1117/12.2525515
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic
Abstract
We report recent results on the study of pair production by nonlinear Breit-Wheeler process in the collision of a high energy photon beam with a counter-propagating laser beam. This configuration has been used in particular in the pioneering Burke experiment [Burke et al., 1997], and all the energy of the produced particles comes from the initial energy of the beam : hence the name showers. For a fixed laser energy amount we study the optimal situation, and show that the total production rate increases more quickly with the effective surface than the decrease of the production rate with the peak intensity, if we are above treshold for the quantum parameter (>>1). We consider both Gaussian fields and Laguerre-Gauss beams with parameters l = 1- 4, carring orbital angular momentum (OAM). 3D Particle-In-Cell (PIC) simulations are performed with the opensource PIC code SMILEI [Derouillat et al., CPC (2008)]. Our study show the counterintutive result that increasing peak intensity can result in decreasing the pair production, and suggest that in this configuration the extra complexity of introducing AOM beams is not justified if the focus is on pair creation.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Caterina Riconda, Fabien Niel, M. Grech, François Amiranoff, and Mathieu Lobet "Soft pair showers in the collision of gamma rays with laser pulses: role of pulse energy versus intensity (Conference Presentation)", Proc. SPIE 11039, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers IV, 110390X (14 May 2019); https://doi.org/10.1117/12.2525515
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Gamma radiation
Pulsed laser operation
Bragg cells
Laser energy
Particles
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top