Fast oscillating structures in electron spectra followingHeq++Hecollisions (q=1,2) at low projectile energies

Periodic Variations in the Wavelength Distributions following Photon Interferences: Analogy with Electron Interferences

“…Since this hypothesis, the wave nature of the electron has been demonstrated in numerous experiments, by observing diffraction or interference patterns resulting in electron scattering on matter, for example, [2][3][4][5][6][7][8][9][10]. During the last years, electron interference effects have been widely investigated in electron-and ion-induced ionization [7][8][9][10][11][12][13][14][15][16][17][18], as well as in photoionization [19][20][21][22][23][24][25][26][27] of isolated atoms and molecules. In the electron interference experiments [5][6][7][8][9][10][11][12][13][14][15][19][20][21][22][23], each single electron hits the position-sensitive detector like a particle but traverses the interferometer slits (or scatters on atomic centers) like a wave.…”

Interferences in coherent electron emission from diatomic molecules

“…Moreover, for H + + H 2 collisions some evidence for still higher frequency oscillations superimposed on the primary and secondary interference structures was observed [5]. High-frequency oscillations have also been seen in low velocity atomic collisions of 20 keV He + and 40 keV He 2+ with atomic He [17], leading to speculation that these oscillations are due to coherent emission from the transient molecule formed during the collision of homonuclear partners [5], a hypothesis that still needs verification. These various interference characteristics associated with electron emission from H 2 have been reviewed by Tanis and Hossain [18].…”

Experimental evidence for Young's interference effects in autoionization following 30 keV He2++H2collision

“…The scattering chamber and the electron spectrometer have been described previously in full detail [2]. Here, a , respectively) a single-electron condition can be assured, since the probability that two autoionization electrons from different projectiles scatter on a given 2 2 H residual target is exceedingly small.…”

“…Here, a , respectively) a single-electron condition can be assured, since the probability that two autoionization electrons from different projectiles scatter on a given 2 2 H residual target is exceedingly small. The emitted electrons were detected with an electrostatic parallel-plate analyser, and sorted as a function of their energy and emission angle [2]. Typical low-resolution energy distributions at observation angles of 160°, 90° and 20° are shown in figure 1.…”