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Table 1 Fitting parameters and corresponding PAL trapping modes describing positron annihilation in bulk mineral α-As4S4 and powdered β-As4S4

From: Probing Sub-atomistic Free-Volume Imperfections in Dry-Milled Nanoarsenicals with PAL Spectroscopy

Sample, fitting

Fitting parameters

PAL trapping modes

τ 1

I 1

τ 2

I 2

τ 3

I 3

τ b

κ d

τ 2 b

τ 2 b

ns

a.u.

ns

a.u.

ns

a.u.

ns

ns−1

ns

a.u.

α-As4S4, ×3

0.193

0.666

0.346

0.308

1.873

0.026

0.224

0.72

0.12

1.54

α-As4S4, ×2

0.193

0.685

0.339

0.315

0.223

0.70

0.12

1.52

α-As4S4, ×2-gen.

0.194

0.656

0.456

0.343

0.241

1.02

0.22

1.89

β-CGP, ×3

0.207

0.745

0.432

0.222

2.337

0.033

0.235

0.58

0.20

1.84

β-CGP, ×2

0.206

0.793

0.439

0.207

0.232

0.53

0.21

1.89

β-CGP, ×2-gen.

0.208

0.734

0.656

0.266

0.254

0.87

0.40

2.58

β-FGP, ×2

0.193

0.607

0.344

0.393

0.233

0.90

0.11

1.48

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