The diagram above outlines our experimental setup. An O₂⁺ ion beam, generated by the electron cyclotron resonance (ECR) ion source by electron impact, is crossed with a laser pulse with wavelengths of either 395 nm or 263 nm. The interaction between the strong laser field and the ion beam causes the O₂⁺ molecules to ionize and/or dissociate. The resulting fragment ions are accelerated by the spectrometer by a magnitude proportional to their charge to energy ratio, where neutral particles are not accelerated. The O₂⁺ beam is caught in a faraday cup, which measures the current of the beam and prevents damage to the detector. The fragment particles then hit a position and time sensitive detector, which takes kinematically complete measurements, allowing us to determine the momentum and energy of each particle.