Angular momentum sensitive two-center interference

In quantum mechanics the Young-type double-slit experiment can be performed with electrons either traveling through a double slit or being coherently emitted from two inversion symmetric molecular sites. In the latter one the valence photoionization cross sections of homonuclear diatomic molecules were predicted to oscillate over kinetic energy almost 50 years ago. Beyond the direct proof of the oscillatory behavior of these photoionization cross sections σ, we show that the angular distribution of the emitted electrons reveals hitherto unexplored information on the relative phase shift between the corresponding partial waves through two-center interference patterns.

[Value of plasma ribonuclease as a marker for gynecologic tumors and breast tumors]

In 151 patients the plasma-ribonuclease-activity was measured. The results of a control group of 47 patients were compared to the pretherapeutic values of 21 cases with cervical intraepithelial neoplasia, 83 cases with gynecologic cancer and 47 cases with breast cancer. The upper limit of the normal range was 300 ng/ml. The method is not appropriate for the detection of precancer of the uterine cervix or for breast cancer. For gynecologic tumors we found a sensitivity rate of 87% and a specificity rate of 85%.