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Table 2 Results of the OCT examination of the irradiated spots

From: Possible modifications of parchment during ion beam analysis

Sample

Spot

Current (pA)

Charge per unit area (µC/cm2)

Crater widtha (µm)

Crater depthb (µm)

Treatment (5 min immersion)

T1

1

500

0.5

n. c.c

n. c

H2O

2

1

2252

 ~ 15d

3

2

1861

97

4

3

2362

117

T2

1

500

0.5

n. c

n. c

3% H2O2

2

1

187

74

3

2

2240

76

4

3

2502

72

W1

1

500

0.5

n. c

n. c

No treatment

2

1

n. c

n. c

3

2

n. c

n. c

4

3

n. c

n. c

W4

1

1000

2

2246

80

3% H2O2

2

3

2362

94

3

4

2473

80

4

5

2619

74

W6

1

250

2

2392

86

3% H2O2

2

3

2532

86

3

4

2642

121

4

5

2701

101

  1. aEstimated error = 20 µm
  2. bEstimated error = 10 µm
  3. cNo crater observed
  4. dEstimated value, crater almost not detectable