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Un gruppo di ricercatori del Politecnico di Zurigo ha creato l'impulso laser ai raggi X più breve mai misurato al mondo: è durato 43 attosecondi, ossia 43 miliardesimi di miliardesimi di secondo. I risultati della ricerca sono pubblicati sull'ultimo numero della rivista scientifica "Optics Express".
Potrebbe servire a modificare le reazioni chimiche
Con questa tecnica, il team diretto da Jakob Wörner si prefigge sia di osservare che di manipolare i movimenti degli elettroni durante le
reazioni chimiche. Bloccando le variazioni della carica elettrica in un punto preciso di una molecola, infatti, si potrebbe impedire o incoraggiare la creazione di nuovi legami chimici.
Gli impulsi di attosecondi sono stati analizzati per la prima volta nel 2001, e da allora, gli scienziati di tutto il mondo provano a generarne di sempre più brevi, per capire meglio il mondo subatomico.
ATS/Bleff
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