Journal article Open Access

Observation of nonsequential double ionization of helium with optical tunneling

Fittinghoff, D. N.; Bolton, P. R.; Chang, B.; Kulander, K. C.


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{
  "DOI": "10.1103/physrevlett.69.2642", 
  "author": [
    {
      "family": "Fittinghoff, D. N."
    }, 
    {
      "family": "Bolton, P. R."
    }, 
    {
      "family": "Chang, B."
    }, 
    {
      "family": "Kulander, K. C."
    }
  ], 
  "issued": {
    "date-parts": [
      [
        1992, 
        11, 
        2
      ]
    ]
  }, 
  "abstract": "We have measured the ion yields for helium ionized by 120 fs, 614 nm laser pulses for intensities near 1016 W/cm2. We have found that for these ultrashort pulses the He+2 data exhibit a feature which saturates in parallel with the He+ signal indicating that the ionization may proceed nonsequentially. We propose a new mechanism, which can exist only in the tunneling regime, for such nonsequential ionization.", 
  "title": "Observation of nonsequential double ionization of helium with optical tunneling", 
  "type": "article-journal", 
  "id": "1233895"
}
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