Effectiveness of additional lead shielding to protect staff from scattering radiation during endoscopic retrograde cholangiopancreatography procedures. [PDF]
J Radiat Res, 2018 Endoscopic retrograde cholangiopancreatography (ERCP) is often complex and involves long fluoroscopic times, with significant radiation exposure to medical staff. We investigated protective effects of an additional attached lead shielding device.
Morishima Y, Chida K, Meguro T.
europepmc +2 more sources
Angular momentum loss in gravitational scattering, radiation reaction, and the Bondi gauge ambiguity [PDF]
Physics Letters B, 2022 Recently, Damour computed the radiation reaction on gravitational scattering as the (linear) response to the angular momentum loss which he found to be of O ( G 2 ) in the gravitational constant.
G. Veneziano, G. Vilkovisky
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation, 2021 A novel method based on the combination of scattering-matrix approach and microwave network theory is proposed for the realization of in-band scattering and radiation tradeoff of broadband phased arrays.
Zhechen Zhang +5 more
semanticscholar +1 more source
Scattering Amplitudes and Conservative Binary Dynamics at O(G^{4}). [PDF]
Physical Review Letters, 2021 Using scattering amplitudes, we obtain the potential contributions to conservative binary dynamics in general relativity at fourth post-Minkowskian order O(G^{4}).
Z. Bern +6 more
semanticscholar +1 more source
Radiated Angular Momentum and Dissipative Effects in Classical Scattering. [PDF]
Physical Review Letters, 2022 We present a new formula for the angular momentum J^{μν} carried away by gravitational radiation in classical scattering. This formula, combined with the known expression for the radiated linear momentum P^{μ}, completes the set of radiated Poincaré ...
A. Manohar +2 more
semanticscholar +1 more source
Infrared features of gravitational scattering and radiation in the eikonal approach [PDF]
Physical Review D, 2018 Following a semiclassical eikonal approach—justified at transplanckian energies order by order in the deflection angle Θs∼4Gsb≡2Rb—we investigate the infrared features of gravitational scattering and radiation in four space-time dimensions, and we ...
M. Ciafaloni, D. Colferai, G. Veneziano
semanticscholar +1 more source
The amplitude for classical gravitational scattering at third Post-Minkowskian order [PDF]
Journal of High Energy Physics, 2021 We compute the scattering amplitude for classical black-hole scattering to third order in the Post-Minkowskian expansion, keeping all terms needed to derive the scattering angle to that order from the eikonal formalism.
N. Bjerrum-Bohr +3 more
semanticscholar +1 more source
Radiative contributions to gravitational scattering [PDF]
Physical Review D, 2021 The effects of radiation-reaction on the classical scattering of two point masses, in General Relativity, are derived by a variation-of-constants method.
D. Bini, T. Damour, A. Geralico
semanticscholar +1 more source
Generation of twisted γ-ray radiation by nonlinear Thomson scattering of twisted light
Matter and Radiation at Extremes, 2019 Interaction of twisted strong laser radiation with electrons in the classical regime is considered. We investigate transfer of the angular momentum of absorbed laser photons to the emitted radiation.
Yue-Yue Chen +2 more
semanticscholar +1 more source
A numerical approach for acoustic radiation and scattering of moving bubbles at low frequencies
Frontiers in Physics, 2023 The acoustic radiation and scattering of underwater bubbles play an important role in ocean exploration, target localization, acoustic measurements, etc. The two-phase fluid flow and moving boundary result in the lack of means to predict the sound field,
Yi-Fan Li +3 more
doaj +1 more source