Abstract
Application of the electrostatic ion storage ring ELISA to studies of clusters and biomolecules is discussed. Ions injected from a plasma source or a sputter source are hot, and at short times the yield of neutrals is usually dominated by decay of metastable ions. We have demonstrated that the decay function is close to a 1/t dependence when the internal energy of the ions is conserved, i.e., when photon emission can be ignored. Deviations from a 1/t distribution therefore gives information about the radiative lifetime or, for larger systems, about the intensity of the emitted radiation. Systematic measurements have been carried out for fullerene anions C N −, for even values of N from 36 to 96, to test a classical dielectric model. Recently we have installed an electrospray ion source with a Paul trap for bunching, which can be used to inject biomolecular ions from solution, and the first experiments on laser spectroscopy of biomolecules have been carried out. Also lifetimes of excited states have been measured for stored biomolecular ions excited by a laser pulse.
Similar content being viewed by others
References
Andersen, L. H., Andersen, T. and Hvelplund, P., Adv. At. Mol. Opt. Phys. 38 (1997), 155.
Hvelplund, P., Andersen, J. U. and Hansen, K., In: D. H. E. Dubin and D. Schneider (eds), Trapped Charged Particles and Fundamental Physics, AIP Conference Proc. 457, Woodbury, N.Y., 1999, p. 220.
Møller, S. P., Nucl. Instr. Meth. A 394 (1997), 281.
Almén, O. and Nielsen, K. O., Nucl. Instrum. Methods 1 (1957), 302.
Andersen, H. H. and Tykesson, P., IEEE Nucl. Sci. 22 (1975) 1632.
Gaskell, S. J., J. Mass Spectrom. 32 (1997), 677.
Andersen, J. U., Hvelplund, P., Nielsen, S. B., Tomita, S., Wahlgreen, H., Møller, S. P., Pedersen, U. V., Forster, J. S. and Jørgensen, T. J. D., Rev. Sci. Instrum. 73 (2002), 1284.
Hansen, K., Andersen, J. U., Hvelplund, P., Møller, S. P., Pedersen, U. V. and Petrunin, V. V., Phys. Rev. Lett. 87 (2001), 123401.
Shi, Y., Spasov, V. A. and Ervin, K. M., J. Chem. Phys. 111 (1999), 938.
Dunbar, R. C., Mass Spectrom. Rev. 11 (1992), 309.
Boissel, P., de Parseval, P., Marty, P. and Lefèvre, G., J. Chem. Phys. 106 (1997), 4973.
Andersen, J. U., Brink, C., Hvelplund, P., Larsson, M. O., Bech Nielsen, B. and Shen, H., Phys. Rev. Lett. 77 (1996), 3991.
Walther, C., Dietrich, G., Dostal, W., Hansen, K., Krückeberg, S., Lützenkirchen, K. and Sweikhard, L., Phys. Rev. Lett. 83 (1999), 3816.
Andersen, J. U., Gottrup, C., Hansen, K., Hvelplund, P. and Larsson, M. O., Eur. Phys. J. D 17 (2001), 189.
Andersen, J. U. and Bonderup, E., Eur. Phys. J. D 11 (2000), 413.
Tomita, S., Andersen, J. U., Gottrup, C., Hvelplund, P. and Pedersen, U. V., Phys. Rev. Lett. 87 (2001), 073401.
Lifshitz, C., Int. J. Mass Spectrom. 198 (2000), 1.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Andersen, J.U., Andersen, L.H., Hvelplund, P. et al. Studies of Clusters and Biomolecules in ELISA. Hyperfine Interactions 146, 283–291 (2003). https://doi.org/10.1023/B:HYPE.0000004201.81619.ab
Issue Date:
DOI: https://doi.org/10.1023/B:HYPE.0000004201.81619.ab