Research on Molecular Modification of L(+)-Cysteine Induced by 110 keV Fe+ Ion Beam Irradiation
- Received Date: 2002-05-29
- Accepted Date: 1900-01-01
- Available Online: 2003-05-05
Abstract: Fe+ ions with the energy of 110 keV were implanted into films of L(+)-cysteine. FTIR, UV VIS spectrometry and 1H- NMR analysis of the irradiated samples prove that some of the original bio-molecules were seriously damaged and significant modifications were induced. ESR analysis shows that a kind of long life radical was formed in the irradiated samples. The results of ESI-FTMS analysis further supports the molecular modification induced by low-energy ion beam irradiation. The radiation effects are closely connected with the energy deposition in solid L(+)-cysteine samples.