Two-quantum photoprocesses in DNA under picosecond laser UV irradiation at 216 and 270 nm.
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.
Gurzadyan
G G
GG
Lazerayin Tekhnika, R & D Co., Yerevan, Armenia, U.S.S.R.
Ispiryan
R K
RK
Voskanyan
K S
KS
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*
D004247:DNA