In the following table you can find the electronic stopping power of He ions in atoms and compounds, plotted versus the projectile energy. For each ion-target, you can download the graphs as images, the data as ascii files and the origin plots.
Some systems with only one or two sets of measurements have not been plotted yet although the data is in the database. To get all the data on He ions, check out the list of data for He ions, and download all data for He ions. The reference codes are explained in the list of all data references, and the curve designations in the list of stopping power tables and programs. All the available ORIGIN files for He ions in this table can be downloaded here.
Ions | Target | Graph | Files | Comments |
He Ions |
Acetylene |
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He Ions |
Ag |
SRIM13 and ICRU49 do not describe the low energy data by Gö13. Change of slope at 3 keV, the velocity constant changes (see Gö13). |
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He Ions |
Air |
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He Ions |
Al, versus v |
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He Ions |
Al |
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He Ions |
Al2O3 |
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He Ions |
Ar |
In agreement with Chu’s and Besenbacher’s measurements, SRIM2003 predicts no gas-solid difference. Excellent agreement of SRIM03 and ICRU 49 with the data |
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He Ions |
Au |
Measurements since 1990 in colour |
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He Ions |
Au, versus v |
There is an indication of a stopping threshold similar to the case of H ions in Au. The theory by Zeb12 shows a change of steepness there. |
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He Ions |
B |
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He Ions |
Be |
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He Ions |
Bi |
New data Mm19 confirms the tendency around the stopping maximum. |
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He Ions |
Bone (biological target) |
Only one set of data, on sheep femur, agrees very well with ICRU49 for Compact Bone 119. |
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He Ions |
Butane |
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He Ions |
C |
Pe81 data are too high compared to many others |
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He Ions |
Ca |
Only one set of data. Large discrepancy between Eppacher measurements and SRIM 2013 |
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He Ions |
CCl4 liquid, vapor |
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He Ions |
CF4 |
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He Ions |
CH4 |
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He Ions |
C3H4 Allene |
SRIM does not describe the data for impact energies below 2MeV. |
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He Ions |
CO2 |
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He Ions |
Co |
Excellent agreement of SRIM03 with the data |
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He Ions |
Cr |
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He Ions |
CR-39 |
Cr-39 is nuclear track material, polyallylglycol carbonate, C12H18O7 |
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He Ions |
Cu |
Data by KJ85, was added to the plot, showing good agreement with the rest. |
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He Ions |
Cyclohexane liquid, vapor |
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He Ions |
Cyclopropane |
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He Ions |
Dy |
Good agreement of SRIM03 with most of the data |
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He Ions |
Er |
Good agreement of SRIM03 with most of the data |
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He Ions |
Ethane |
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He Ions |
Ethyl alcohol liquid |
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He Ions |
Ethyl alcohol liquid, vapor |
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He Ions |
Ethylene |
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He Ions |
Fe |
Good agreement of the curves (except for Z99) with most of the data |
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He Ions |
Formvar |
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He Ions |
GaN |
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only one set of data: BA12 |
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He Ions |
GaSb |
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He Ions |
Gd |
Only two sets of data in a small energy region. The high energy measurements for H in Gd (x4) have been added only to have a comparison. |
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He Ions |
Ge |
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He Ions |
Graphite |
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He Ions |
Graphite Oxide |
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He Ions |
H2 |
Good agreement between Z12, ICRU 49 and the data. |
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He Ions |
H2O condensed |
GarM09 curve reproduces the data quite well |
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He Ions |
H2O vapor |
SRIM with Bragg rule agrees better with the data than the suggested correction of -6% |
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He Ions |
H2O phase effect |
The agreement of ICRU49 with the data is very good. Stopping by vapor water is above condensed (liquid water and ice) for impact energies below 400 keV/amu. |
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He Ions |
H2S |
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He Ions |
Havar |
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He Ions |
He |
Good agreement between curves and measurements since 1980 up to now. Note that the low energy data by Jedrejcic (Jed18) and by Golser (Gl92b) include nuclear stopping |
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He Ions |
Heptane liquid, vapor |
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He Ions |
Hexane liquid, vapor |
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He Ions |
Hf |
Only one data! More measurements are needed |
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He Ions |
HfO2 |
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He ions |
Hydroxy apatite |
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He Ions |
InN |
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He Ions |
In |
Data by Chu (1969) and by the group of P. Bauer(2014) are in reasonable agreement around the stopping maximum, as described by SRIM and MSTAR |
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He Ions |
Kapton, Polyimide |
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He Ions |
KCl, versus v |
The new Mk09 data show an (extrapolated) threshold |
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He Ions |
Kr |
Good agreement of SRIM03 and ICRU 49 with the data |
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He Ions |
La |
Good agreement of SRIM-2013 with most of the data. |
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He Ions |
Li |
Only two sets of data. Unexpected values of Ep94a around stopping maximum. The high energy measurements for H in Li (x4) have been added only to have a comparison. |
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He Ions |
LiF |
Only measurements at very low energies |
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He Ions |
LiF, versus v |
The new Mk09 data show a threshold at v = 0.1 a.u. (250 eV/u) |
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He Ions |
LR115 |
LR115 is cellulose nitrate, nuclear track material, it is C6H8O5(NO2)2, but can also be C6H8O5(NO2)H. Both SRIM curves are included in the plot. |
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He Ions |
Lu |
First data, by Trz18. SRIM-2013 overestimates these experiments around the maximum |
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He Ions |
Methane |
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He Ions |
Methyl alcohol liquid, vapor |
Clear liquid-gas difference around the stopping maximum |
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He Ions |
Mg |
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He Ions |
Mn |
SRIM13 correctly describes the data by Chu and White in 1969. |
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He Ions |
Mo |
Click here,
for the |
The Sp98 data are exceptional in that they go down as far as 0.01 keV. But these values are based on an evaluation of measured ranges for 5 - 100 keV He ions, taking the energy dependence from TRIM 95. H. Paul re-evaluated the Sp98 data by a comparison with Monte Carlo ranges from SRIM 2003 (circles). |
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He Ions |
Mylar |
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He Ions |
N2 |
Excellent agreement between curves and the data. Recent data by Jed18 includes nuclear stopping. |
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He Ions |
Nb |
Agreement between data by Mor20 and Bv02. SRIM follows previous data Li73b. |
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He Ions |
Nb2O5 |
Excellent agreement between curves and data |
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He Ions |
Ne |
Excellent agreement between curves and data |
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He Ions |
Ni |
Excellent agreement of SRIM13 with the data even at very low energies. |
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He Ions |
NiSi |
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He Ions |
O2 gas |
Excellent agreement between SRIM03, ICRU 49 and data |
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He Ions |
O2 solid |
Only one set of data for solid oxygen |
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He Ions |
Pb |
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He Ions |
Pd |
This figure includes the data by Rosenblum in 1928! excellent agreement of SRIM2013. |
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He Ions |
Pentane liquid, vapor |
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He Ions |
3-Pentanone vapor |
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He Ions |
Polycarbonate |
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He Ions |
Polypropylene |
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He Ions |
Polystyrene |
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He Ions |
Polysulfone |
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He Ions |
Propane |
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He Ions |
Propyl alcohol vapor |
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He Ions |
Propylene |
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He Ions |
Propylene oxide vapor |
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He Ions |
Pt |
The most recent data question the SRIM predictions below 1 MeV |
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He Ions |
Sb |
Good agreement of SRIM-2013 with most of the data. |
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He Ions |
Se |
Fair agreement of SRIM03 with the data, except for Co83 |
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He Ions |
SF6 |
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He Ions |
Si |
The tendency of the newest data seems to confirm SRIM-2013 around the maximum. There is a clear disagreement between new data and curves in the (20-100) keV region. |
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He Ions |
SiC |
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He Ions |
Silicon Nitride |
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He Ions |
SiO2 |
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He Ions |
SiO2, versus v |
Contrary to the hydrogen data, the helium data do not show a threshold |
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He Ions |
Sn |
Good agreement of SRIM13 with the data except for Ep94a |
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He Ions |
Ta |
Good agreement of SRIM with most of the data |
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He Ions |
Ta2O5 |
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He Ions |
Tb |
SRIM underestimates recent data Kum18 |
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He Ions |
Te |
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He Ions |
Th |
First data, by Trz18. Good agreement of SRIM-2013 with these new data. |
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He Ions |
Ti |
Good agreement of the curves with the data (except for Gt62) |
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He Ions |
TiN |
SRIM13 with and without compound correction is included |
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He Ions |
TiO2 |
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He Ions |
V |
Excellent agreement of SRIM03 with the data |
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He Ions |
Vyns |
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He Ions |
W |
Good agreement of SRIM03, ICRU49 and the data |
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He Ions |
Xe |
Excellent agreement of SRIM03 with the data; ICRU 49 fits less well at 2000 keV |
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He Ions |
Y |
Fair agreement of SRIM03 with the data, except for Ep94a at low energy |
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He Ions |
Zn |
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He Ions |
ZnO |
Only one set of data (Fa16) available. |
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He Ions |
ZnTe |
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He Ions |
Zr |
Good agreement of SRIM-2013 with the only one set of data available. |