Stopping Power of Matter for Ions

Helium Ions

In this page you can find the available values for the electronic stopping power of H ions (in 10^-15eV cm²/atom), plotted versus equivalent proton energy. The data reference codes are explained in the list of all data references , and the curve designations in the list of stopping power tables and programs.

At present, data and graphs are available for the following targets (to download all the experimental data for Helium Ions click here):

Ions	Target	Graph	Files	Comments
He Ions	Acetylene	Click here	ORIGIN, DATA
He Ions	Ag	Click here	ORIGIN, DATA	SRIM13 and ICRU49 do not describe the low energy data by Gö13. Change of slope at 3 keV, the velocity constant changes (see Gö13).
He Ions	Air	Click here	ORIGIN, DATA
He Ions	Al, versus v	Click here	ORIGIN	For He in Al, stopping is velocity-proportional, but with different slopes in two different regions, indicating charge exchange between He and Al atoms
He Ions	Al	Click here	ORIGIN, DATA
He Ions	Al₂O₃	Click here	ORIGIN, DATA
He Ions	Ar	Click here	ORIGIN, DATA	In agreement with Chu’s and Besenbacher’s measurements, Z03 (SRIM2003) predicts no gas-solid difference. Excellent agreement of Z03 and ICRU 49 with the data
He Ions	Au	Click here	ORIGIN, DATA	Pe81 data are too high compared to many others
He Ions	Au, versus v	Click here	ORIGIN	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.
He Ions	B	Click here	ORIGIN
He Ions	Be	Click here	ORIGIN, DATA
He Ions	Bi	Click here	ORIGIN, DATA	Good agreement of Z03 with the data
He Ions	Butane	Click here	ORIGIN, DATA
He Ions	C	Click here	ORIGIN, DATA	Pe81 data are too high compared to many others
He Ions	Ca	Click here	ORIGIN, DATA	Large discrepancy between Eppacher measurement and Z03
He Ions	CF₄	Click here	ORIGIN, DATA
He Ions	CO₂	Click here	ORIGIN, DATA
He Ions	CCl₄ liquid, vapor	Click here	ORIGIN, DATA
He Ions	Co	Click here	ORIGIN, DATA	Excellent agreement of Z03 with the data
He Ions	Cr	Click here Click here	ORIGIN, DATA	The second graph shows the low energy data by Sp98 better; reevaluated Sp98 data are shown by circles (cf. remarks for Mo)
He Ions	Cu	Click here Click here	ORIGIN, DATA	The second graph shows the low energy data by Sp98 better; reevaluated Sp98 data are shown by circles (cf. remarks for Mo)
He Ions	Cyclohexane liquid, vapor	Click here	ORIGIN, DATA
He Ions	Cyclopropane	Click here	ORIGIN, DATA
He Ions	Dy	Click here	ORIGIN, DATA	Good agreement of Z03 with most of the data
He Ions	Ethane	Click here	ORIGIN, DATA
He Ions	Ethyl alcohol liquid	Click here	ORIGIN
He Ions	Ethyl alcohol liquid, vapor	Click here	ORIGIN, DATA
He Ions	Ethylene	Click here	ORIGIN, DATA
He Ions	Fe	Click here	ORIGIN, DATA	Good agreement of the curves (except for Z99) with most of the data
He Ions	Formvar	Click here	ORIGIN, DATA
He Ions	GaSb	Click here	ORIGIN, DATA
He Ions	Ge	Click here	ORIGIN, DATA
He Ions	H₂	Click here	ORIGIN, DATA	Good agreement between Z12, ICRU 49 and the data.
He Ions	H₂S	Click here	ORIGIN
He Ions	Havar	Click here	ORIGIN, DATA
He Ions	He	Click here	ORIGIN, DATA	Excellent agreement between curves and data (except for Hb72)
He Ions	Heptane liquid, vapor	Click here	ORIGIN, DATA
He Ions	Hexane liquid, vapor	Click here	ORIGIN, DATA
He Ions	HfO₂	Click here	ORIGIN
He ions	Hydroxy apatite	Click here	ORIGIN, DATA
He Ions	InN	Click here	ORIGIN, DATA
He Ions	Kapton, Polyimide	Click here	ORIGIN, DATA
He Ions	KCl, versus v	Click here	ORIGIN	The new Mk09 data show an (extrapolated) threshold
He Ions	Kr	Click here	ORIGIN, DATA	Good agreement of Z03 and ICRU 49 with the data
He Ions	LiF, versus v	Click here	ORIGIN	The new Mk09 data show a threshold at v = 0.1 a.u. (250 eV/u)
He Ions	Methane	Click here	ORIGIN, DATA
He Ions	Methyl alcohol liquid, vapor	Click here	ORIGIN, DATA
He Ions	Mg	Click here	ORIGIN, DATA
He Ions	Mo	Click here Click here	ORIGIN, DATA	The Sp98 data are exceptional in that they go down as far as 0.01 keV (see the second graph). But these values are based on an evaluation of measured ranges for 5 - 100 keV He ions, taking the energy dependence from TRIM 95. We re-evaluated the Sp98 data by a comparison with Monte Carlo ranges from SRIM 2003 (circles).
He Ions	Mylar	Click here	ORIGIN, DATA
He Ions	N₂	Click here	ORIGIN, DATA	Excellent agreement between curves and the data
He Ions	Nb2O5	Click here	ORIGIN, DATA	Excellent agreement between curves and data
He Ions	Ne	Click here	ORIGIN, DATA	Excellent agreement between curves and data
He Ions	Ni	Click here Click here	ORIGIN, DATA	Excellent agreement of Z03 with the data above 20 keV. See also remark for Mo.
He Ions	O₂	Click here	ORIGIN, DATA	Excellent agreement between Z03, ICRU 49 and data
He Ions	Pb	Click here	ORIGIN, DATA
He Ions	Pentane liquid, vapor	Click here	ORIGIN, DATA
He Ions	3-Pentanone vapor	Click here	ORIGIN, DATA
He Ions	Polycarbonate	Click here	ORIGIN, DATA
He Ions	Polypropylene	Click here	ORIGIN, DATA
He Ions	Polystyrene	Click here	ORIGIN, DATA
He Ions	Polysulfone	Click here	ORIGIN, DATA
He Ions	Propane	Click here	ORIGIN, DATA
He Ions	Propyl alcohol vapor	Click here	ORIGIN, DATA
He Ions	Propylene	Click here	ORIGIN, DATA
He Ions	Propylene oxide vapor	Click here	ORIGIN, DATA
He Ions	Pt	Click here	ORIGIN, DATA	Good agreement between Z03 and the data. At low energy, stopping is proportional to velocity, but the velocity constant changes at 4 keV (Gö13).
He Ions	Se	Click here	ORIGIN, DATA	Fair agreement of Z03 with the data, except for Co83
He Ions	SF₆	Click here	ORIGIN, DATA
He Ions	Si	Click here	ORIGIN, DATA	The ICRU 49 curve appears slightly low at the maximum
He Ions	SiC	Click here	ORIGIN, DATA
He Ions	SiO₂	Click here	ORIGIN, DATA
He Ions	SiO₂, versus v	Click here	ORIGIN	Contrary to the hydrogen data, the helium data do not show a threshold
He Ions	Sn	Click here	ORIGIN, DATA	Good agreement of SRIM13 with the data except for Ep94a
He Ions	Ta	Click here	ORIGIN, DATA	Excellent agreement of Z03 with the data
He Ions	Ta₂O₅	Click here	ORIGIN, DATA
He Ions	Ti	Click here	ORIGIN, DATA	Good agreement of the curves with the data (except for Gt62)
He Ions	TiO₂	Click here	ORIGIN
He Ions	V	Click here	ORIGIN, DATA	Excellent agreement of Z03 with the data
He Ions	Vyns	Click here	ORIGIN, DATA
He Ions	W	Click here	ORIGIN, DATA	Good agreement
He Ions	Water	Click here	ORIGIN, DATA	GarM09 curve reproduces the data quite well
He Ions	Water	Click here	ORIGIN
He Ions	Water vapor	Click here	ORIGIN, DATA
He Ions	Xe	Click here	ORIGIN, DATA	Excellent agreement of Z03 with the data; ICRU 49 fits less well at 2000 keV
He Ions	Y	Click here	ORIGIN, DATA	Fair agreement of Z03 with the data, except for Ep94a at low energy
He Ions	Zn	Click here	ORIGIN, DATA
He Ions	ZnO	Click here	ORIGIN, DATA	Only one set of data
He Ions	ZnTe	Click here	ORIGIN, DATA
He Ions	Zr	Click here	ORIGIN	Good agreement of Z03 with the scant data

Click here to see the complete list of data for helium ions available in the files. The list was brought up to date in 2007. In this list, every line corresponds to one data file. The targets are ordered alphabetically. The headings in the list have the following meaning:

M	Mass Number of Projectile
Eq. Energy	Equivalent Proton Energy, i.e., energy of a proton of equal speed
Error	Error in percent. "e" means estimate.
Ref.	Reference Code, see list of all data references
Meas.	Number of measurement within the publication (you don’t need that!)/p>
Method	Method of measurement according to classification by Paul, Semrad and Seilinger, Table 5
Ag.	State of aggregation (s: solid; g: gaseous). G: graphite (as opposed to amorphous carbon)
File	File designation: the file name Al.005, e.g., means file number 5 for hydrogen ions on Al.

See also: H. Paul, D. Semrad and A. Seilinger, " Reference stopping cross sections for hydrogen and helium ions in selected elements", Nucl. Instr. Methods in Phys. Res. B61 (1991) 261.