Fig. 1. Top: Pinhole image. Bottom: Time integrated spectra of plasma of Mo XP_633.

Fig. 2. Close-up of the electrical and photonic records 400 ns around the time of pinching (shot XP_633). The electrical records (voltage, B-dot probe signal, current as numerically integrated from B-dot). X-ray signal is figured out by the XRD signal in volts (right scale).

Fig. 3. Dependence of the line ratios of (Na1+3D)/Mg1 on plasma electron temperatures for (a) n_e = 1 × 10²⁰ cm⁻³ and (b) n_e = 1 × 10²¹ cm⁻³.

Fig. 4. Mean. |PC1〉 and |PC2〉 spectra without beam fraction, f = 0.0 and with beam fraction, f = 0.1.

Fig. 5. 3D representation of |PC1〉, |PC2〉, and |PC3〉 coefficients for different electron beam fractions (a) f = 0.0, (b) 0.1, and (c) 0.2 at an electron density of n_e = 1 × 10²⁰ cm⁻³.

Fig. 6. The correspondence of |PC1〉 coefficients and electron temperatures at classified electron densities of (a) n_e = 1 × 10²⁰ cm⁻³ and (b) n_e = 1 × 10²¹ cm⁻³ and beam fractions.

Fig. 7. Architecture of an FFNN for classification.

Fig. 8. Comparison of the experimental spectrum of XP_633 (grey line) with (a) PCA-based ANN and (b) non-LTE modeling generated synthetic spectra (T_e = 660 eV, n_e = 1 × 10²⁰ cm⁻³ and f = 0.1).