{
  "annotation_id": "3b69b361-141f-48ed-964f-a96a4864d1bd",
  "date_created": "2026-03-02T18:01:10.666000Z",
  "date_modified": "2026-03-02T18:01:10.666000Z",
  "file_hash": "a30a1c856c305527da440f4c6348224510344496ee3f8573ca305451b8a4a53a",
  "private": false,
  "record": {
    "abstract": "We studied the hard x-ray emission and the K-alpha x-ray conversion\nefficiency produced by 60 fs high contrast frequency doubled Ti: sapphire laser\npulse focused on Cu foil target. Cu K-alpha photon emission obtained with\nsecond harmonic laser pulse is more intense than the case of fundamental laser\npulse. The Cu K-alpha conversion efficiency shows strong dependence on laser\nnonlinearly skewed pulse shape and reaches the maximum value 4x10-4 with 100 fs\nnegatively skewed pulse. It shows the electron spectrum shaping contribute to\nthe increase of conversion efficiency. Particle-in-cell simulations\ndemonstrates that the application of high contrast laser pulses will be an\neffective method to optimize the x-ray emission, via the Enhanced Vacuum\nHeating mechanism.",
    "arxiv_id": "physics/0607091",
    "authors": [
      "L. M. Chen",
      "M. Kando",
      "S. V. Bulanov",
      "J. Koga",
      "K. Nakajima",
      "T. Tajima",
      "M. H. Xu",
      "X. H. Yuan",
      "Y. T. Li",
      "Q. L. Dong",
      "J. Zhang"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "title": "Study of x-ray emission enhancement via high contrast femtosecond laser   interacting with solid foil",
    "url": "https://arxiv.org/abs/physics/0607091"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "73dc0a11-e628-4914-b1ca-20f5f681d8e3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}