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Nagy G, Lu P, Walker AV. An investigation of secondary ion yield enhancement using Bin2+ (n=1,3,5) primary ions. J Am Soc Mass Spectrom. 2008;19(1):33-45doi: 10.1016/j.jasms.2007.10.016.
Nagy, G., Lu, P., & Walker, A. V. (2008). An investigation of secondary ion yield enhancement using Bin2+ (n=1,3,5) primary ions. Journal of the American Society for Mass Spectrometry, 19(1), 33-45. https://doi.org/10.1016/j.jasms.2007.10.016
Nagy, Gabriella, et al. "An investigation of secondary ion yield enhancement using Bin2+ (n=1,3,5) primary ions." Journal of the American Society for Mass Spectrometry vol. 19,1 (2008): 33-45. doi: https://doi.org/10.1016/j.jasms.2007.10.016
Nagy G, Lu P, Walker AV. An investigation of secondary ion yield enhancement using Bin2+ (n=1,3,5) primary ions. J Am Soc Mass Spectrom. 2008 Jan;19(1):33-45. doi: 10.1016/j.jasms.2007.10.016. PMID: 18293484.
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J Am Soc Mass Spectrom. 2008 Jan;19(1):33-45. doi: 10.1016/j.jasms.2007.10.016.

An investigation of secondary ion yield enhancement using Bin2+ (n=1,3,5) primary ions.

Journal of the American Society for Mass Spectrometry

Gabriella Nagy, Peng Lu, Amy V Walker

Affiliations

  1. Department of Chemistry, Washington University in St. Louis, MO 63130, USA.

PMID: 18293484 DOI: 10.1016/j.jasms.2007.10.016

Abstract

We have investigated secondary ion yield enhancement using Bin2+ (n=1, 3, 5) primary ions impacting phenylalanine, 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE), cholesterol, Irganox 1010, and polymer films adsorbed on silicon and aluminum. Secondary ion yields are increased using Bi2+and Bi3(2+) primary ions for the molecular layers and polymers that can undergo allyl cation rearrangements. For Irganox 1010, the deprotonated molecular ion yields (m/z 1175; [M-H]-) are one to two times larger for Bi2+ and Bi(3)2+ primary ions than for Bi+ and Bi3+ at the same primary ion velocities. In the positive ion mode, the largest fragment ion yield (m/z 899) is 1.5 times larger for Bi2+ ions than for Bi+. For Bi3(2+) the largest fragment ion yield is only 70% of the ion yield using Bi3+, but the secondary ion yields of the fragment ions at m/z 57 and 219 are enhanced. For polymers that can undergo allyl cation rearrangement reactions the secondary ion yield enhancements of the monomer ions range from 1.3 to 4.3. For Bi(5)2+ primary ions, secondary ion yields were the same or slightly larger than for Bi5+ in the negative ion mass spectra for Irganox 1010, but lower in the positive ion mode. No secondary ion yield enhancements were measured on polymer samples for Bi5(2+). For all polymer films studied, secondary ion intensities from the oligomer regions are substantially decreased using Bin2+ (n=1, 3, 5). We discuss differences in the ionization mechanisms for doubly and singly-charged Bi primary ion bombardment.

References

  1. Phys Rev B Condens Matter. 1992 Sep 15;46(11):6671-6687 - PubMed
  2. Philos Trans A Math Phys Eng Sci. 2004 Jan 15;362(1814):77-102 - PubMed
  3. J Am Soc Mass Spectrom. 2005 May;16(5):733-42 - PubMed
  4. Phys Rev A Gen Phys. 1986 Apr;33(4):2830-2832 - PubMed
  5. Phys Rev Lett. 1988 Mar 7;60(10):948-951 - PubMed
  6. J Am Soc Mass Spectrom. 2005 Oct;16(10):1608-18 - PubMed

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