Table 2 Overview of experiments completed and experimental evaluation of spot sizes.

From: DNA damage interactions on both nanometer and micrometer scale determine overall cellular damage

Beamtime

Ion species

# Samples

Δx (µm)

Δy (µm)

Method

C

R

3.8 µm

5.4 µm

7.6 µm

10.8 µm

Apr 2014

55 MeV C

3

4

4

5

0.68

1.19

Polycarbonate

Aug 2014

55 MeV C

4

5

4

5

0.73

0.79

Polycarbonate

Oct 2014

20 MeV p

5

5

5

5

5

0.61

1.11

FNTD

Nov 2014

20 MeV p

5

5

5

4

4

0.51

0.99

FNTD

Feb 2016

33 MeV Li

6

5

5

5

5

0.67

1.36

CR 39

Jul 2016

55 MeV C

6

5

4

Nov 2016

55 MeV C

6

6

5

Feb 2017

33 MeV Li

5

3

4

4

5

5

0.65

1.47

CR 39

  1. The number of samples specifies the number of independent platings for sham irradiated controls (C), random irradiation (R) or spot radiation in mesh grids of different widths (approximate mesh width indicated in the table). The beam spots had elliptical shape with semi-axes Δx and Δy, and different methods were performed for spot size characterization.