Programmable Hard-X-Ray Spectral Comb Generation via Laser-Compton Scattering
Abstract
Independent control of line spacing and offset underpins programmable frequency-comb spectroscopy, yet it has not been established for hard-X-ray sources based on inverse Compton scattering after electron transport and angular collection. Self-consistent multi-particle tracking and Li'enard-Wiechert radiation calculations model a transported 10 pC beam and its angle-integrated spectrum near 11 keV. Laser pulse separation programs the comb spacing, while pulse-to-pulse phase translates the entire line grid at fixed spacing. The spacing model agrees within 0.52%, while transport and optics change the phase-transfer slope by less than 0.2%. At fixed electron spot size, the largest resolvable separation scales as the inverse square of normalized emittance; subnanometer bunches also produce a mode-locked train with 13.9 as spacing. This two-coordinate programmability enables phase-stepped multicolor measurements and offers routes to hard-X-ray Ramsey interferometry, coherent control of core and nuclear excitations, and attosecond nonlinear spectroscopy.
Related
- Gravitational Compton scattering at the fourth post-Minkowskian order
- Quantum circuit representation and incomplete Bell measurements in Compton scattering
- Coherent deeply virtual Compton scattering on helium-4 beyond the leading twist approximation
- Bright Compton source based on the interaction of an ultraintense laser pulse with a relativistically transparent foil and a plasma mirror
- Photon-nucleon entanglement in Compton scattering at low and high energies
BibTeX
@misc{zhang2026programmable,
title = {{Programmable Hard-X-Ray Spectral Comb Generation via Laser-Compton Scattering}},
author = {Hao Zhang and Ji Qiang and Shukui Zhang and Sergio Carbajo},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.17166},
eprint = {2610.17166},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.17166},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Programmable Hard-X-Ray Spectral Comb Generation via Laser-Compton Scattering
AU - Hao Zhang
AU - Ji Qiang
AU - Shukui Zhang
AU - Sergio Carbajo
PY - 2026
DA - 2026/10/15
PB - arXiv
DO - 10.48550/arxiv.2610.17166
UR - https://arxiv.org/abs/2610.17166
AB - Independent control of line spacing and offset underpins programmable frequency-comb spectroscopy, yet it has not been established for hard-X-ray sources based on inverse Compton scattering after electron transport and angular collection. Self-consistent multi-particle tracking and Li'enard-Wiechert radiation calculations model a transported 10 pC beam and its angle-integrated spectrum near 11 keV. Laser pulse separation programs the comb spacing, while pulse-to-pulse phase translates the entire line grid at fixed spacing. The spacing model agrees within 0.52%, while transport and optics change the phase-transfer slope by less than 0.2%. At fixed electron spot size, the largest resolvable separation scales as the inverse square of normalized emittance; subnanometer bunches also produce a mode-locked train with 13.9 as spacing. This two-coordinate programmability enables phase-stepped multicolor measurements and offers routes to hard-X-ray Ramsey interferometry, coherent control of core and nuclear excitations, and attosecond nonlinear spectroscopy.
ER -