Evidence map›Paper›PMID 42304088›Full record

ArticleScientific reports2026

Stable and tunable MeV γ-ray generation via dual-laser inverse Thomson scattering from a laser-plasma accelerator.

Hai-En Tsai, Tobias M Ostermayr, Robert E Jacob, Qiang Chen, Benjamin J Greenwood, Robert Ettelbrick, Anthony J Gonsalves, Kei Nakamura, Liona Fan-Chiang, Ocean Zhou and 11 more

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In one paragraph

Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

21 authors.

Hai-En TsaiLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA. haientsai@lbl.gov.
Tobias M OstermayrLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Robert E JacobLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Qiang ChenLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Benjamin J GreenwoodLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Robert EttelbrickLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Anthony J GonsalvesLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Kei NakamuraLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Liona Fan-ChiangLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Ocean ZhouLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Sam K BarberLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Fumika IsonoLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Scott J ThompsonIdaho National Laboratory, Idaho Falls, 83415, ID, USA.
James T JohnsonIdaho National Laboratory, Idaho Falls, 83415, ID, USA.
Jay D HixIdaho National Laboratory, Idaho Falls, 83415, ID, USA.
Edward SeaburyIdaho National Laboratory, Idaho Falls, 83415, ID, USA.
David L ChichesterIdaho National Laboratory, Idaho Falls, 83415, ID, USA.
Carl B SchroederLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Eric EsareyLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Jeroen van TilborgLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.
Cameron G R GeddesLawrence Berkeley National Laboratory, BELLA Center, Berkeley, 94720, CA, USA.

Funding

U.S. Department of Energy, National Nuclear Security Administration, Defense Nuclear Nonproliferation Research and Development (DNN R&D, NA-22)U.S. Department of Energy, National Nuclear Security Administration through the Nuclear Science and Security Consortium Award Numbers DE-NA0003180 and DE-NA0000979U.S. Department of Energy, Office of Science, Office of High Energy Physics Contract No. DE-AC02-05CH11231
6 · The paper itself

Abstract

Inverse Thomson scattering from laser-plasma accelerators offers a pathway to compact, tunable MeV γ-ray sources for reduced-dose radiography and enhanced performance in nuclear resonance fluorescence (NRF)-based isotope identification. However, photon yield and spectral quality are often limited by constraints on interaction geometry and scatter-laser tunability. Here we demonstrate a MeV γ-ray source based on a dual-laser inverse Thomson scattering configuration driven by a 100-TW laser-plasma accelerator. Electron beams tunable from 122 to 204 MeV with [Formula: see text] mrad divergence and [Formula: see text] mrad pointing stability generate γ rays with peak energies from 276 keV to 1.2 MeV and yields up to [Formula: see text] photons per shot. By independently controlling the interaction position and the scatter-pulse duration, we experimentally match the scatter pulse to the walk-off-limited interaction length. Extending the scatter pulse to 200 fs increases photon production by approximately [Formula: see text] while maintaining operation in the linear Thomson regime, thereby preserving narrow spectral bandwidth and controlled radiation divergence. Radiographic characterization demonstrates MeV-level penetration and [Formula: see text] mm spatial resolution, while stable operation is sustained over multi-hour timescales across multiple days. These results show that interaction-length optimization provides a scalable strategy for improving photon yield, spectral control, and operational stability in compact laser-plasma-accelerator-driven γ-ray sources.

Identifiers

PMID42304088
PMCPMC13458682

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.