Scholarlink

<p>Utilizing the laser-driven Z-pinch effect, we propose an approach for generating an ultrashort, intense MeV neutron source with femtosecond pulse duration. The self-generated magnetic field driven by a petawatt-class laser pulse compressed the deuterium in a single nanowire to more than 120 times its initial density, achieving an unprecedented particle number density of <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1738_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="68" /> </InlineMediaObject> <EquationSource Format="TEX">\( 10^{25}\, \text {cm}^{-3}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msup> <mn>10</mn> <mn>25</mn> </msup> <mspace width="0.166667em" /> <msup> <mtext>cm</mtext> <mrow> <mo>-</mo> <mn>3</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation>. Through full-dimensional kinetic simulations, including nuclear reactions, we found that these Z-pinches can generate high-intensity and short-duration neutron pulses, with the peak flux reaching <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2025_1738_Article_IEq2.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="90" /> </InlineMediaObject> <EquationSource Format="TEX">\(10^{27}\, \text {cm}^{-2} \text {s}^{-1}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msup> <mn>10</mn> <mn>27</mn> </msup> <mspace width="0.166667em" /> <msup> <mtext>cm</mtext> <mrow> <mo>-</mo> <mn>2</mn> </mrow> </msup> <msup> <mtext>s</mtext> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation>. Such laser-driven neutron sources are beyond the capabilities of existing approaches and pave the way for groundbreaking applications in r-process nucleosynthesis studies and high-precision time-of-flight neutron data measurements.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Laser-driven micro-pinch: a pathway to ultra-intense neutrons

  • 期刊论文

  • 发表日期：

    2025年5月2日

查看全文
  • Pu-Tong Wang,
  • Xue-Song Geng,
  • Guo-Qiang Zhang,
  • Liang-Liang Ji,
  • Yu-Gang Ma

摘要

Utilizing the laser-driven Z-pinch effect, we propose an approach for generating an ultrashort, intense MeV neutron source with femtosecond pulse duration. The self-generated magnetic field driven by a petawatt-class laser pulse compressed the deuterium in a single nanowire to more than 120 times its initial density, achieving an unprecedented particle number density of \( 10^{25}\, \text {cm}^{-3}\) 10 25 cm - 3 . Through full-dimensional kinetic simulations, including nuclear reactions, we found that these Z-pinches can generate high-intensity and short-duration neutron pulses, with the peak flux reaching \(10^{27}\, \text {cm}^{-2} \text {s}^{-1}\) 10 27 cm - 2 s - 1 . Such laser-driven neutron sources are beyond the capabilities of existing approaches and pave the way for groundbreaking applications in r-process nucleosynthesis studies and high-precision time-of-flight neutron data measurements.