@article{oai:repo.qst.go.jp:00043542, author = {Tanabe, Tetsumi and Noda, Kouji and et.al and 田邊 徹美 and 野田 耕司}, issue = {19}, journal = {Physical Review Letters}, month = {May}, note = {Electron-biomolecular ion collisions were studied using an electrostatic storage ring with a merging beam technique for singly protonated peptides (angiotensin I, II and III). A strong neutral-particle emission at around 6.5 eV was found in addition to neutrals from recombination at low energies. The rates of the high-energy peak greatly decreased with a slight decrease in the number of amino-acid residues from angiotensin I to III. These results suggest that some peptide bonds were selectively cleaved.}, pages = {193201-1--193201-4}, title = {Resonant Neutral-Particle Emission in Collisions of Electrons with Peptide Ions in a Storage Ring}, volume = {90}, year = {2003} }