Analytical approximation of cross-section effects on charge exchange spectra observed in hot fusion plasmas

When applied to the mass spectrum of argon, the techniques of Aston banding and I.P. curve comparison reveal the presence of metastable states of Ar+ near the ionization threshold of Ar++. These metastable states make possible the collision charge-exchange reaction 10/20 with an over-all cross section at 1 kev of a least 2.5 Å2.

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THE INTERACTION OF ρ AND K+ MESONS WITH MATTER

International Journal of Modern Physics D ◽

10.1142/s0218271810017573 ◽

2010 ◽

Vol 19 (08n10) ◽

pp. 1609-1618

Author(s):

J. AICHELIN ◽

C. HARTNACK ◽

Y. LEIFELS ◽

H. OESCHLER ◽

S. VOGEL

Keyword(s):

Cross Section ◽

Charge Exchange ◽

Production Cross Section ◽

Production Cross ◽

Heavy Ion ◽

Potential Interaction ◽

Heavy Ion Experiments ◽

Vector Mesons ◽

Kaon Production ◽

K Mesons

We review in this contribution the information we can obtain from heavy-ion experiments about the interaction of mesons with matter. We demonstrate that the vector mesons seen in experiments come predominantly from low densities. Kaons offer a better opportunity but most of the presently available experimental observables do not allow to analyze separately the three essential unknown quantities: the kaon production cross-section in the medium, the K+N potential interaction at finite densities and temperatures and the kaon (elastic or charge exchange) rescattering cross-section in the medium. We propose a measurement which almost exclusively tests the K+N potential.

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Phenomenological fit of the np charge exchange cross-section at intermediate and high energy

Il Nuovo Cimento A ◽

10.1007/bf02820859 ◽

1975 ◽

Vol 25 (3) ◽

pp. 467-481 ◽

Cited By ~ 13

Author(s):

G. Bizard ◽

B. Diu

Keyword(s):

Cross Section ◽

Charge Exchange ◽

High Energy ◽

Charge Exchange Cross Section ◽

Exchange Cross Section

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Dependence of the cross section for inclusive pion double charge exchange on nuclear mass and charge

Physical Review Letters ◽

10.1103/physrevlett.62.1837 ◽

1989 ◽

Vol 62 (16) ◽

pp. 1837-1839 ◽

Cited By ~ 23

Author(s):

P. A. M. Gram ◽

S. A. Wood ◽

E. R. Kinney ◽

S. Høibråten ◽

P. Mansky ◽

...

Keyword(s):

Cross Section ◽

Charge Exchange ◽

Nuclear Mass ◽

Double Charge Exchange ◽

The Cross ◽

Double Charge

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A discussion on infared astronomy - On the chemistry of Jupiter's upper atmosphere

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences ◽

10.1098/rsta.1969.0008 ◽

1969 ◽

Vol 264 (1150) ◽

pp. 151-151

Keyword(s):

Ultraviolet Radiation ◽

Cross Section ◽

Infrared Radiation ◽

Organic Molecules ◽

General Procedure ◽

Analytical Approximation ◽

Upper Atmosphere ◽

Rapid Rise ◽

Absorption Bands ◽

Jovian Atmosphere

The infrared opacity of Jupiter’s upper atmosphere will be influenced by line blanketing resulting from strong absorption bands of ammonia and organic molecules. In order to calculate these effects eventually, we conduct a first investigation into the ion-molecule chemistry of the upper Jovian atmosphere. Experimental results show that intense ultraviolet radiation reacts with the constituents of the Jovian atmosphere to produce C2H4> ^2^65 a, and higher polymers. The general procedure for calculating both equilibrium and non-equilibrium abundances of these products is formulated and applied to the case of the surface passage of a satellite shadow. A specific example is made of ethylene, for which an analytical approximation gives 10 (to power of 10) molecules in an atmospheric column of 1 cm2 cross-section after a very rapid rise to equilibrium. Such a concentration of ethylene does not substantially affect the infrared radiation in the shadow.

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