Cosmic ray produced nitrogen in extra terrestrial matter

K. J. Mathew; S. V.S. Murty

doi:10.1007/BF02841731

Cosmic ray produced nitrogen in extra terrestrial matter

K. J. Mathew, S. V.S. Murty

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

Production rates of¹⁵N by both solar cosmic rays (SCR) and galactic cosmic rays (GCR) have been calculated for moon, as well as meteorites of various sizes. Our production rates of¹⁵N which considered both the reaction channels¹⁶O(p, pn)¹⁵O and¹⁶O(p, 2p)¹⁵N separately are about 30% higher than those by Reedy (1981) who considered only the channel¹⁶O(p, pn)¹⁵O and used an empirical scaling factor to estimate the contribution from¹⁶O(p, 2p)¹⁵N. Production ratio¹⁵N²¹ Ne is composition dependent and hence is different for various silicate minerals. Additionally the ratio¹⁵N/²¹Ne is very sensitive to the energy spectrum of the cosmic rays. This fact can be made use of in characterizing as well as in decoupling the SCR and GCR effects in extraterrestrial samples.

Original language	English
Pages (from-to)	415-437
Number of pages	23
Journal	Proceedings of the Indian Academy of Sciences, Earth and Planetary Sciences
Volume	102
Issue number	3
DOIs	https://doi.org/10.1007/BF02841731
State	Published - Sep 1993
Externally published	Yes

Keywords

cosmogenic nuclides
galactic cosmic rays
meteorites
moon
neon
Nitrogen
solar cosmic rays

Access to Document

10.1007/BF02841731

Cite this

@article{2429994d21ab4c849590f2d8b8cfc791,

title = "Cosmic ray produced nitrogen in extra terrestrial matter",

abstract = "Production rates of15N by both solar cosmic rays (SCR) and galactic cosmic rays (GCR) have been calculated for moon, as well as meteorites of various sizes. Our production rates of15N which considered both the reaction channels16O(p, pn)15O and16O(p, 2p)15N separately are about 30% higher than those by Reedy (1981) who considered only the channel16O(p, pn)15O and used an empirical scaling factor to estimate the contribution from16O(p, 2p)15N. Production ratio15N21 Ne is composition dependent and hence is different for various silicate minerals. Additionally the ratio15N/21Ne is very sensitive to the energy spectrum of the cosmic rays. This fact can be made use of in characterizing as well as in decoupling the SCR and GCR effects in extraterrestrial samples.",

keywords = "cosmogenic nuclides, galactic cosmic rays, meteorites, moon, neon, Nitrogen, solar cosmic rays",

author = "Mathew, {K. J.} and Murty, {S. V.S.}",

year = "1993",

month = sep,

doi = "10.1007/BF02841731",

language = "English",

volume = "102",

pages = "415--437",

journal = "Proceedings of the Indian Academy of Sciences, Earth and Planetary Sciences",

issn = "0253-4126",

publisher = "Springer",

number = "3",

}

TY - JOUR

T1 - Cosmic ray produced nitrogen in extra terrestrial matter

AU - Mathew, K. J.

AU - Murty, S. V.S.

PY - 1993/9

Y1 - 1993/9

N2 - Production rates of15N by both solar cosmic rays (SCR) and galactic cosmic rays (GCR) have been calculated for moon, as well as meteorites of various sizes. Our production rates of15N which considered both the reaction channels16O(p, pn)15O and16O(p, 2p)15N separately are about 30% higher than those by Reedy (1981) who considered only the channel16O(p, pn)15O and used an empirical scaling factor to estimate the contribution from16O(p, 2p)15N. Production ratio15N21 Ne is composition dependent and hence is different for various silicate minerals. Additionally the ratio15N/21Ne is very sensitive to the energy spectrum of the cosmic rays. This fact can be made use of in characterizing as well as in decoupling the SCR and GCR effects in extraterrestrial samples.

AB - Production rates of15N by both solar cosmic rays (SCR) and galactic cosmic rays (GCR) have been calculated for moon, as well as meteorites of various sizes. Our production rates of15N which considered both the reaction channels16O(p, pn)15O and16O(p, 2p)15N separately are about 30% higher than those by Reedy (1981) who considered only the channel16O(p, pn)15O and used an empirical scaling factor to estimate the contribution from16O(p, 2p)15N. Production ratio15N21 Ne is composition dependent and hence is different for various silicate minerals. Additionally the ratio15N/21Ne is very sensitive to the energy spectrum of the cosmic rays. This fact can be made use of in characterizing as well as in decoupling the SCR and GCR effects in extraterrestrial samples.

KW - cosmogenic nuclides

KW - galactic cosmic rays

KW - meteorites

KW - moon

KW - neon

KW - Nitrogen

KW - solar cosmic rays

UR - http://www.scopus.com/inward/record.url?scp=0027842447&partnerID=8YFLogxK

U2 - 10.1007/BF02841731

DO - 10.1007/BF02841731

M3 - Article

AN - SCOPUS:0027842447

SN - 0253-4126

VL - 102

SP - 415

EP - 437

JO - Proceedings of the Indian Academy of Sciences, Earth and Planetary Sciences

JF - Proceedings of the Indian Academy of Sciences, Earth and Planetary Sciences

IS - 3

ER -

Cosmic ray produced nitrogen in extra terrestrial matter

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this