We demonstrate that the standard picture of strong-field tunnel-ionization from molecules should be reformulated. The extended nature of the molecular potential implies the separation of some of the molecular sites from the edge of the ionization barrier. We show that the dependence of the tunnel probability with the distance to the barrier is translated into the ionized wavepacket, modifying substantially the high-order harmonic emission. The introduction of the dependence of tunnel ionization with the molecular site significantly improves the theoretical description of high-order harmonic generation in molecules, used as a cornerstone in high-harmonic spectroscopy and attosecond imaging.

中文翻译：

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分子中高次谐波产生中的位点特异性隧道电离

我们证明应该重新制定分子强场隧道电离的标准图片。分子势的扩展性质意味着一些分子位点与电离势垒的边缘分离。我们表明，隧道概率与到势垒距离的相关性被转化为电离波包，大大改变了高次谐波发射。隧道电离与分子位点的相关性的引入显着改善了分子中高次谐波产生的理论描述，用作高次谐波光谱和阿秒成像的基石。