Original Bremsstrahlung gamma ray spectrum without detector filter from 25 MeV/u 124Sn+124Sn reactions

This dataset provides the unfolded bremsstrahlung gamma-ray source spectrum from 25 MeV/u 124Sn+124Sn reactions. The four columns of ReconstructedSpectrumDATA.txt are the center-of-mass gamma-ray energy, unfolded central spectrum, statistical uncertainty, and systematic uncertainty. Version 2 corrects the systematic-uncertainty column. The laboratory-to-center-of-mass spectral-density Jacobian was already applied to the central spectrum and statistical uncertainty in the previous version, but was inadvertently omitted from the fourth column. The corrected values satisfy sigma_sys(c.m.) = sigma_sys(lab) / 1.04631. This correction affects only the numerical systematic-uncertainty band. The energies, unfolded central spectrum, statistical uncertainties, source-spectrum constraint R_HMT = (20.8 +/- 1.8)%, and scientific conclusions are unchanged. The quoted HMT constraint is derived from the central source-spectrum chi-square curve, while systematic sensitivity is evaluated from eight separately reconstructed variation spectra. Neither calculation reads the corrected fourth column of the public text table.