The low-energy ion range in DNA.

Area of Science:

• Physics
• Materials Science
• Biophysics

Background:

• Accurate calculation of low-energy ion range in DNA is essential for fundamental studies of ion irradiation effects.
• Existing models and data for ion range calculations in DNA are often divergent and unreliable, lacking a unified approach.

Purpose of the Study:

• To develop a unified and dependable approach for calculating the low-energy ion range in DNA.
• To provide reliable physical parameters for low-energy ion implantation studies in biological materials.

Main Methods:

• Utilized a simplified mean-pseudoatom model for the DNA target.
• Applied ion stopping theory, specifically focusing on the low reduced energy regime with a cube-root energy dependence (E(1/3)).
• Derived and presented calculation formulas for ion range in DNA.

Main Results:

• Developed a unified model for calculating low-energy ion range in DNA.
• Proposed energy limits for the applicability of the low-energy approximation based on ion atomic number.
• Results demonstrated convincing and dependable accuracy when compared with simulations and existing data.

Conclusions:

• The proposed approach offers a unified and reliable method for calculating low-energy ion ranges in DNA.
• This model enhances the accuracy of fundamental studies involving ion irradiation of DNA.
• The findings provide a dependable basis for future research in ion-DNA interactions.