Abstract
X-ray photoelectron spectroscopy (XPS) has been employed in order to study the effects of proton irradiation on herring sperm single-stranded DNA. Systematic changes of the chemical shifts in the C, N, O, and P XPS line components as functions of the irradiation dose were observed, indicative of the bonding configurations in the DNA system. While the C 1s XPS lines showed weak blueshifts, the N 1s, O 1s, and P 2p XPS lines showed blueshifts with a marked dependence on the irradiation dose in a prominent manner. Our results show that linear energy transfer by charged particles and photons may have distinct molecular-level effects as the C 1s, N 1s, O 1s, and P 2p XPS lines showed redshifts in our previous study of effects of the γ-ray irradiation on the same system.
| Original language | English |
|---|---|
| Pages (from-to) | 578-583 |
| Number of pages | 6 |
| Journal | Journal of the Korean Physical Society |
| Volume | 69 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2016 Aug 1 |
Keywords
- Proton irradiation effect
- Single-stranded DNA
- X-ray photoelectron spectroscopy
ASJC Scopus subject areas
- General Physics and Astronomy