title: Two-quantum photoprocesses in DNA under picosecond laser UV irradiation at 216 and 270 nm.
abstract: It is demonstrated that at high power picosecond laser irradiation of 216 and 270 nm, two-quantum photodestructions of the DNA secondary structure, such as interstrand covalent crosslinks, "weak" crosslinks, and B----C conformational transition, take place. Thermal effects do not contribute to the observed effects.
authors.affiliation: Lazerayin Tekhnika, R & D Co., Yerevan, Armenia, U.S.S.R.
authors.forename: G G
authors.initials: GG
authors.lastname: Gurzadyan
authors.forename: R K
authors.initials: RK
authors.lastname: Ispiryan
authors.forename: K S
authors.initials: KS
authors.lastname: Voskanyan
mesh_terms: D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry*; D004249:DNA Damage / Q000528:radiation effects*; D007834:Lasers; D009690:Nucleic Acid Conformation; D013997:Time Factors; D014466:Ultraviolet Rays / Q000009:adverse effects*
chemical_list: D004247:DNA