Europhys. Lett.
Volume 70, Number 1, April 2005
Page(s) 123 - 128
Section Condensed matter: electronic structure, electrical, magnetic, and optical properties
Published online 09 March 2005
Europhys. Lett., 70 (1), pp. 123-128 (2005)
DOI: 10.1209/epl/i2004-10471-3

Low-energy ion bombardment of frozen bacterial spores and its relevance to interplanetary space

M. Tuleta1, L. Gabla1 and A. Szkarlat2

1  Institute of Physics, Jagiellonian University - Reymonta 4, 30-059 Cracow, Poland
2  Laboratory of Microbiology, Clinical Children's Hospital of the Jagiellonian University Medical College - Wielicka 265, 30-663 Cracow, Poland

received 3 September 2004; accepted in final form 11 February 2005
published online 9 March 2005

The panspermia hypothesis is concerned with the dissemination of life in space in the form of simple micro-organisms. During an interplanetary journey the micro-organisms are subjected to the action of, among others, the solar wind. We have simulated experimentally such conditions bombarding frozen bacterial spores with low-energy hydrogen ions. On the basis of the results obtained and our earlier research, a new look at the panspermia hypothesis is discussed.

79.20.Rf - Atomic, molecular, and ion beam impact and interactions with surfaces.
87.50.-a - Effects of radiation and external fields on biomolecules, cells and higher organisms.
96.50.-e - Interplanetary space.

© EDP Sciences 2005