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Hans Henrik Andersen (May 1, 1937 in Frederiksberg, Denmark – November 3, 2012) was a Professor at the Niels Bohr Institute at the University of Copenhagen (emeritus since 2004). He was the founder and subsequently co-editor of the scientific journal "Nuclear Instruments and Methods in Physics Research B".

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  • هانس هنريك أندرسن
  • Hans Henrik Andersen
  • Hans Henrik Andersen
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  • هانس هنريك أندرسن هو فيزيائي دنماركي، ولد في 1 مايو 1937 في Frederiksberg Municipality في الدنمارك، وتوفي في 3 نوفمبر 2012.
  • Hans Henrik Andersen (* 1. Mai 1937 in Frederiksberg, Dänemark; † 3. November 2012) war ein dänischer Atomphysiker. Er war Professor am Niels-Bohr-Institut der Universität Kopenhagen (emeritiert 2004) und war Mitherausgeber der wissenschaftlichen Zeitschrift "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms".
  • Hans Henrik Andersen (May 1, 1937 in Frederiksberg, Denmark – November 3, 2012) was a Professor at the Niels Bohr Institute at the University of Copenhagen (emeritus since 2004). He was the founder and subsequently co-editor of the scientific journal "Nuclear Instruments and Methods in Physics Research B".
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  • هانس هنريك أندرسن هو فيزيائي دنماركي، ولد في 1 مايو 1937 في Frederiksberg Municipality في الدنمارك، وتوفي في 3 نوفمبر 2012.
  • Hans Henrik Andersen (* 1. Mai 1937 in Frederiksberg, Dänemark; † 3. November 2012) war ein dänischer Atomphysiker. Er war Professor am Niels-Bohr-Institut der Universität Kopenhagen (emeritiert 2004) und war Mitherausgeber der wissenschaftlichen Zeitschrift "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms". Er hat wesentliche Beiträge zu verschiedenen Gebieten der Atomphysik und der Festkörperphysik geleistet, insbesondere auf dem Gebiet des Bremsvermögens von Materie für schnelle geladene Teilchen. Die Genauigkeit (0,3 – 0,5 %) seiner Messungen des Bremsvermögens dünner Folien ist bis heute (2006) unübertroffen. Sie erfolgten durch Messung der Wärmeentwicklung in der Folie bei der Temperatur des flüssigen Heliums (−269 °C). 1969 gelang ihm mit Mitarbeitern der Nachweis, dass das Bremsvermögen für Alphateilchen mehr als viermal so groß wie das für Protonen ist. Da die Kernladungszahl des Alphateilchens genau doppelt so groß ist wie die des Protons, bedeutet das, dass das Bremsvermögen nicht genau proportional ist, wie es der einfachen Bethe-Formel entspräche. Dies war ein neuerlicher Beweis für die Existenz des Barkas-Effekts (nach Walter H. Barkas, auch Barkas-Andersen-Effekt genannt).
  • Hans Henrik Andersen (May 1, 1937 in Frederiksberg, Denmark – November 3, 2012) was a Professor at the Niels Bohr Institute at the University of Copenhagen (emeritus since 2004). He was the founder and subsequently co-editor of the scientific journal "Nuclear Instruments and Methods in Physics Research B". He has made important contributions to various fields of atomic physics and solid state physics, especially in the field of the stopping power of matter for fast charged particles. The accuracy (0.3–0.5%) of his measurements is unsurpassed even today (2006). They were done by measuring the amount of heat deposited in a foil at the temperature of liquid helium (−269 °C). Together with his collaborators, he succeeded in showing in 1969 that the stopping power for fast alpha particles is more than four times as large as that for protons. Since the atomic number (Z) of alpha particles is exactly twice as big as that of protons, that means that the stopping power is not exactly proportional to Z2, as the simple Bethe formula would have it. That was an additional proof of the existence of the .
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