Chiral effects in spin-dependent elastic electron scattering from molecules

A general theory of elastic spin-dependent collisions between electrons and spinless molecules is developed. The main emphasis is on scattering from oriented, chiral and achiral molecules, although results for isotropic target systems are also derived. Spin-dependent phenomena are predicted and illustrated with several examples. In particular, chiral effects are discussed in detail and classified according to their behaviour under spatial inversion and time reversal. The authors identify two types of chiral phenomena associated with systems exhibiting 'time-even' and 'time-odd' chirality. The corresponding observables are calculated for a chiral model molecule. It is concluded from the numerical results that the predicted new spin-dependent effects could be measured experimentally.

[1]  Meier,et al.  Elastic electron scattering from CH3I molecules oriented in the gas phase. , 1992, Physical review letters.

[2]  R. Palmer,et al.  Resonances in electron scattering by molecules on surfaces , 1992 .

[3]  P. Mezey.  New developments in molecular chirality , 1991 .

[4]  K. Blum,et al.  Attenuation of longitudinally polarized electron beams by chiral molecules , 1990 .

[5]  K. Blum.  Chiral effects in elastic electron scattering from diatomic oriented molecules , 1990 .

[6]  M. Evans.  Chirality of field induced natural and magnetic optical activity , 1990 .

[7]  K. Blum,et al.  Electron optical activity , 1990 .

[8]  K. Blum,et al.  Spin-dependent electron scattering from oriented molecules , 1989 .

[9]  M. Fink,et al.  Elastic electron scattering cross sections of oriented and aligned molecules , 1989 .

[10]  H. Metiu,et al.  Electron scattering distributions as a probe of adsorbate orientation: CO and N2 , 1988 .

[11]  S. Hayashi.  Asymmetry in elastic scattering of polarised electrons by optically active molecules , 1988 .

[12]  H. Metiu,et al.  On the possibility of using differential cross section measurements for the electronic excitation of adsorbates by an electron beam, to determine the adsorbate orientation , 1986 .

[13]  D. Campbell,et al.  Spin-dependent electron scattering from optically active molecules , 1985, Nature.

[14]  S. Hayashi.  The spin polarisation of electrons due to elastic intramolecular double scattering from optically active molecules , 1985 .

[15]  Heinzmann,et al.  Experimental angular-resolved photoelectron spectroscopy of free oriented CH3I molecules. , 1985, Physical review letters.

[16]  R. Hegstrom.  β Decay and the origins of biological chirality: theoretical results , 1982, Nature.

[17]  R. Hegstrom,et al.  Calculation of a mirror asymmetric effect in electron scattering from chiral targets. [in optically active medium] , 1982 .

[18]  J. Kessler.  Polarisation components violating reflection symmetry in electron scattering from optically active molecules , 1982 .

[19]  P. Faragó.  Spin-dependent features of electron scattering from optically active molecules , 1980 .