Tejas Jani

- The first part of this book is simply detailed solution of eigenvalue problem of hydrogen atom which is given in the book "Physics of Atoms and molecules 2nd edition, 2004 " by H. Bransden and C. J. Joachain.- The remaining part of this book is based on the calculation of wavelength for different exotic atoms such as muonic system, Kaonic system, proton-sigma system, etc.- This book is mainly focused on mathematical calculation of eigen value problem and so given wavelength calculation theory is very much less compare to calculation.

It becomes more important to understand the different properties of molecules from the perspective of fundamental studies. These studies involves their dynamics and different processes involving bond formation, bond breaking and other chemical processes. In doing so one requires some technique using the one can understand the system. One of the such simple technique is to perturb the system and electron impact scattering study is one such method. The present study is important due to detection of such organic molecules in astrophysical environment as they are key constituents for formation of larger amino acids and play vital role in evolution of life.