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Title: Atomic and molecular physics in the gas phase

Abstract

The spatial and temporal distributions of energy deposition by high-linear-energy-transfer radiation play an important role in the subsequent chemical and biological processes leading to radiation damage. Because the spatial structures of energy deposition events are of the same dimensions as molecular structures in the mammalian cell, direct measurements of energy deposition distributions appropriate to radiation biology are infeasible. This has led to the development of models of energy transport based on a knowledge of atomic and molecular interactions process that enable one to simulate energy transfer on an atomic scale. Such models require a detailed understanding of the interactions of ions and electrons with biologically relevant material. During the past 20 years there has been a great deal of progress in our understanding of these interactions; much of it coming from studies in the gas phase. These studies provide information on the systematics of interaction cross sections leading to a knowledge of the regions of energy deposition where molecular and phase effects are important and that guide developments in appropriate theory. In this report studies of the doubly differential cross sections, crucial to the development of stochastic energy deposition calculations and track structure simulation, will be reviewed. Areas of understandingmore » are discussed and directions for future work addressed. Particular attention is given to experimental and theoretical findings that have changed the traditional view of secondary electron production for charged particle interactions with atomic and molecular targets.« less

Authors:
Publication Date:
Research Org.:
Pacific Northwest Lab., Richland, WA (USA)
Sponsoring Org.:
DOE/ER
OSTI Identifier:
6476545
Report Number(s):
PNL-SA-18535; CONF-9009267-4
ON: DE91004811; TRN: 91-000376
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: Physical and chemical mechanisms in molecular radiation biology conference, Woods Hole, MA (USA), 3-7 Sep 1990
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; ELECTRON-MOLECULE COLLISIONS; IONIZATION; ION-ATOM COLLISIONS; ION-MOLECULE COLLISIONS; DIFFERENTIAL CROSS SECTIONS; DNA; ENERGY ABSORPTION; ENERGY LOSSES; ENERGY TRANSFER; HELIUM; IONIZING RADIATIONS; MOLECULAR BIOLOGY; NEON; NITROGEN; PHYSICAL RADIATION EFFECTS; WATER; ABSORPTION; ATOM COLLISIONS; COLLISIONS; CROSS SECTIONS; ELECTRON COLLISIONS; ELEMENTS; FLUIDS; GASES; HYDROGEN COMPOUNDS; ION COLLISIONS; LOSSES; MOLECULE COLLISIONS; NONMETALS; NUCLEIC ACIDS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; RADIATION EFFECTS; RADIATIONS; RARE GASES; 654001* - Radiation & Shielding Physics- Radiation Physics, Shielding Calculations & Experiments; 640304 - Atomic, Molecular & Chemical Physics- Collision Phenomena

Citation Formats

Toburen, L H. Atomic and molecular physics in the gas phase. United States: N. p., 1990. Web.
Toburen, L H. Atomic and molecular physics in the gas phase. United States.
Toburen, L H. 1990. "Atomic and molecular physics in the gas phase". United States. https://www.osti.gov/servlets/purl/6476545.
@article{osti_6476545,
title = {Atomic and molecular physics in the gas phase},
author = {Toburen, L H},
abstractNote = {The spatial and temporal distributions of energy deposition by high-linear-energy-transfer radiation play an important role in the subsequent chemical and biological processes leading to radiation damage. Because the spatial structures of energy deposition events are of the same dimensions as molecular structures in the mammalian cell, direct measurements of energy deposition distributions appropriate to radiation biology are infeasible. This has led to the development of models of energy transport based on a knowledge of atomic and molecular interactions process that enable one to simulate energy transfer on an atomic scale. Such models require a detailed understanding of the interactions of ions and electrons with biologically relevant material. During the past 20 years there has been a great deal of progress in our understanding of these interactions; much of it coming from studies in the gas phase. These studies provide information on the systematics of interaction cross sections leading to a knowledge of the regions of energy deposition where molecular and phase effects are important and that guide developments in appropriate theory. In this report studies of the doubly differential cross sections, crucial to the development of stochastic energy deposition calculations and track structure simulation, will be reviewed. Areas of understanding are discussed and directions for future work addressed. Particular attention is given to experimental and theoretical findings that have changed the traditional view of secondary electron production for charged particle interactions with atomic and molecular targets.},
doi = {},
url = {https://www.osti.gov/biblio/6476545}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Sep 01 00:00:00 EDT 1990},
month = {Sat Sep 01 00:00:00 EDT 1990}
}

Conference:
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