SOLAR WIND IMPLANTATION MODEL FOR {sup 10}Be IN CALCIUM-ALUMINUM INCLUSIONS

Journal Article · Fri Dec 10 00:00:00 EST 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/725/1/443· OSTI ID:21474398

Bricker, Glynn E ^[1]

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1. Department of Mathematics, Statistics, and Physics, Purdue University North Central, Schwarz Bldg, Westville, IN 46391 (United States)

We propose a model for the incorporation of {sup 10}Be within calcium-aluminum inclusions (CAIs) in primitive carbonaceous meteorites. In this model, {sup 10}Be is produced by energetic particle reactions in the proto-solar atmosphere of a more active proto-Sun characterized by energetic particle fluxes higher than contemporary particle fluxes. This {sup 10}Be is incorporated into the solar wind that is then implanted into CAI precursor material. This production mechanism is operational in the contemporary solar system implanting {sup 10}Be in lunar materials. The contemporary production rate of {sup 10}Be at the surface of the Sun is {approx}0.1 {sup 10}Be cm{sup -2} s{sup -1}. Scaling up the contemporary {sup 10}Be production in the proto-Sun by a factor of 10{sup 5} would increase the production rate to 10{sup 410}Be cm{sup -2} s{sup -1}. Using this enhanced production value in conjunction with refractory mass inflow rates at 0.06 AU from the proto-Sun we model {sup 10}Be concentrations in CAI precursors. We calculate the content of solar-wind-implanted {sup 10}Be would have been of the order of 10{sup 1210}Be g{sup -1} in CAIs, consistent with initial{sup 10}Be content found from boron-beryllium isotopic systematics in CAIs.

• OSTI ID: 21474398
• Journal Information: Astrophysical Journal, Vol. 725, Issue 1; Other Information: DOI: 10.1088/0004-637X/725/1/443; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ALUMINIUM
BERYLLIUM
BERYLLIUM 10
BORON
CALCIUM
LUNAR MATERIALS
MASS
METEORITES
METEOROIDS
PROTOPLANETS
SOLAR ATMOSPHERE
SOLAR SYSTEM
SOLAR WIND
SUN
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METALS
ATMOSPHERES
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
ELEMENTS
EVEN-EVEN NUCLEI
ISOTOPES
LIGHT NUCLEI
MAIN SEQUENCE STARS
MATERIALS
METALS
NUCLEI
RADIOISOTOPES
SEMIMETALS
SOLAR ACTIVITY
STARS
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR WINDS
YEARS LIVING RADIOISOTOPES