The online exposure age calculator formerly known as
the CRONUS-Earth 10Be - 26Al exposure age calculator -- results


Version information -- Component Version

Wrapper script: $wrapper_version$
Main calculator: $main_version$
Constants: $consts_version$
Muons: $muon_version$

Comments: $dstring$


Production rate calibration information: $cal_string$


$results_10_ntd$
10Be results:

Results not dependent on spallogenic production rate model: Exposure ages -- constant production rate model:

Scaling scheme for spallation: Lal(1991) / Stone(2000)


Sample name Thickness
scaling
factor
Shielding
factor
Production rate
(muons)
(atoms/g/yr)
Internal
uncertainty
(yr)
Exposure age
(yr)
External
uncertainty
(yr)
Production rate
(spallation)
(atoms/g/yr)




$results_10_td$
Exposure ages -- time-varying production models:

Scaling scheme
for spallation:
Desilets and others
(2003,2006)
Dunai
(2001)
Lifton and others
(2005)
Time-dependent
Lal (1991)/Stone (2000)
Sample name Exposure age
(yr)
External
uncertainty (yr)
Exposure age
(yr)
External
uncertainty (yr)
Exposure age
(yr)
External
uncertainty (yr)
Exposure age
(yr)
External
uncertainty (yr)










$results_26_ntd$
26Al results:

Results not dependent on spallogenic production rate model: Exposure ages -- constant production rate model:

Scaling scheme for spallation: Lal(1991) / Stone(2000)


Sample name Thickness
scaling
factor
Shielding
factor
Production rate
(muons)
(atoms/g/yr)
Internal
uncertainty
(yr)
Exposure age
(yr)
External
uncertainty
(yr)
Production rate
(spallation)
(atoms/g/yr)




$results_26_td$
Exposure ages -- time-varying production models:

Scaling scheme
for spallation:
Desilets and others
(2003,2006)
Dunai
(2001)
Lifton and others
(2005)
Time-dependent
Lal (1991)/Stone (2000)
Sample name Exposure age
(yr)
External
uncertainty (yr)
Exposure age
(yr)
External
uncertainty (yr)
Exposure age
(yr)
External
uncertainty (yr)
Exposure age
(yr)
External
uncertaintiy (yr)










$splotName$

$splotGmtName$
$splotPsName$
$results_R$
26Al/10Be ratios (relative to 07KNSTD!):

Sample 26Al/10Be
ratio




Scaling factor comparison:
$cplotName$

Comparison of exposure ages generated from various scaling schemes. Leftmost, constant production rate: Lal(1991)/Stone(2000) scaling scheme (black). Others, time-dependent production: red, Desilets and others(2003,2006); green, Dunai (2001); blue, Lifton and others (2006); cyan, time-dependent adaptation of Lal(1991)/Stone(2000). Circles denote Be-10 exposure ages; triangles denote Al-26 exposure ages. The thick line shows the 1-sigma internal uncertainty; the thin line shows the 1-sigma external uncertainty.

$cplotGmtName$ - $cplotPsName$



Cutoff rigidity and production rates at site:
$tplotName$

Lower panel, cutoff rigidity changes during exposure predicted by various scaling schemes. The color code is the same as that in the figure above. See the calculator documentation for information on the magnetic field model.

Upper panel, consequent changes in Be-10 production rates at the sample site. The non-time-dependent production rate derived from the Lal(1991)/Stone(2000) scaling scheme is shown by the black line. The color code for the other scaling schemes is the same as above.

$tplotGmtName$ - $tplotPsName$