source: trunk/source/global/management/include/G4SIunits.hh @ 1346

Last change on this file since 1346 was 1337, checked in by garnier, 14 years ago

tag geant4.9.4 beta 1 + modifs locales
File size: 9.0 KB
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1//
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25//
26//
27// $Id: G4SIunits.hh,v 1.5 2006/09/15 08:16:10 gcosmo Exp $
28// GEANT4 tag $Name: geant4-09-04-beta-01 $
29//
30// ----------------------------------------------------------------------
31//
32// Class description:
33//
34// This file is a modified version of SystemOfUnits.h
35// It is provided for checking the overall 'units coherence' of the
36// Geant4 kernel.
37// -------
38// Warning: if you use it, do not forget to recompile the whole Geant4 kernel
39// -------
40// The basic units are those of the International System:
41//
42//              meter             
43//              second             
44//              kilogram     
45//              ampere         
46//              degree kelvin         
47//              the amount of substance (mole)
48//              luminous intensity      (candela)
49//              radian                 
50//              steradian             
51//
52//
53// The SI numerical value of the positron charge is defined here,
54// as it is needed for conversion factor : positron charge = e_SI (coulomb)
55//
56// The others physical constants are defined in the header file :
57//                      PhysicalConstants.h
58//
59
60// Authors: M.Maire, S.Giani
61//
62// History:
63//
64// 10.03.99   created
65// 01.03.01   parsec     
66
67#ifndef G4UNITSTEST_HH
68#define G4UNITSTEST_HH
69
70//
71// Length [L]
72//
73static const double meter  = 1.;                 
74static const double meter2 = meter*meter;
75static const double meter3 = meter*meter*meter;
76
77static const double millimeter  = 0.001*meter;                       
78static const double millimeter2 = millimeter*millimeter;
79static const double millimeter3 = millimeter*millimeter*millimeter;
80
81static const double centimeter  = 10.*millimeter;   
82static const double centimeter2 = centimeter*centimeter;
83static const double centimeter3 = centimeter*centimeter*centimeter;
84
85static const double kilometer = 1000.*meter;                   
86static const double kilometer2 = kilometer*kilometer;
87static const double kilometer3 = kilometer*kilometer*kilometer;
88
89static const double parsec = 3.0856775807e+16*meter;
90
91static const double micrometer = 1.e-6 *meter;             
92static const double  nanometer = 1.e-9 *meter;
93static const double  angstrom  = 1.e-10*meter;
94static const double  fermi     = 1.e-15*meter;
95
96static const double      barn = 1.e-28*meter2;
97static const double millibarn = 1.e-3 *barn;
98static const double microbarn = 1.e-6 *barn;
99static const double  nanobarn = 1.e-9 *barn;
100static const double  picobarn = 1.e-12*barn;
101
102// symbols
103static const double mm  = millimeter;                       
104static const double mm2 = millimeter2;
105static const double mm3 = millimeter3;
106
107static const double cm  = centimeter;   
108static const double cm2 = centimeter2;
109static const double cm3 = centimeter3;
110
111static const double m  = meter;                 
112static const double m2 = meter2;
113static const double m3 = meter3;
114
115static const double km  = kilometer;                   
116static const double km2 = kilometer2;
117static const double km3 = kilometer3;
118
119static const double pc = parsec;
120
121//
122// Angle
123//
124static const double radian      = 1.;                 
125static const double milliradian = 1.e-3*radian;
126static const double degree = (3.14159265358979323846/180.0)*radian;
127
128static const double   steradian = 1.;
129       
130// symbols
131static const double rad  = radian;     
132static const double mrad = milliradian;
133static const double sr   = steradian;
134static const double deg  = degree;
135
136//
137// Time [T]
138//
139static const double second      = 1.;
140static const double nanosecond  = 1.e-9 *second;
141static const double millisecond = 1.e-3 *second;
142static const double microsecond = 1.e-6 *second;
143static const double  picosecond = 1.e-12*second;
144
145static const double hertz = 1./second;
146static const double kilohertz = 1.e+3*hertz;
147static const double megahertz = 1.e+6*hertz;
148
149// symbols
150static const double ns = nanosecond;                   
151static const double  s = second;
152static const double ms = millisecond;
153
154//
155// Mass [E][T^2][L^-2]
156//
157static const double  kilogram = 1.;   
158static const double      gram = 1.e-3*kilogram;
159static const double milligram = 1.e-3*gram;
160
161// symbols
162static const double  kg = kilogram;
163static const double   g = gram;
164static const double  mg = milligram;
165
166//
167// Electric current [Q][T^-1]
168//
169static const double      ampere = 1.;
170static const double milliampere = 1.e-3*ampere;
171static const double microampere = 1.e-6*ampere;
172static const double  nanoampere = 1.e-9*ampere;
173
174//
175// Electric charge [Q]
176//
177static const double coulomb = ampere*second;
178static const double e_SI  = 1.60217733e-19;     // positron charge in coulomb
179static const double eplus = e_SI*coulomb ;              // positron charge
180
181//
182// Energy [E]
183//
184static const double joule = kg*m*m/(s*s);
185
186static const double     electronvolt = e_SI*joule;
187static const double kiloelectronvolt = 1.e+3*electronvolt;
188static const double megaelectronvolt = 1.e+6*electronvolt; 
189static const double gigaelectronvolt = 1.e+9*electronvolt;
190static const double teraelectronvolt = 1.e+12*electronvolt;
191static const double petaelectronvolt = 1.e+15*electronvolt;
192
193// symbols
194static const double MeV = megaelectronvolt;
195static const double  eV = electronvolt;
196static const double keV = kiloelectronvolt;
197static const double GeV = gigaelectronvolt;
198static const double TeV = teraelectronvolt;
199static const double PeV = petaelectronvolt;
200
201//
202// Power [E][T^-1]
203//
204static const double watt = joule/second;        // watt = 6.24150 e+3 * MeV/ns
205
206//
207// Force [E][L^-1]
208//
209static const double newton = joule/meter;       // newton = 6.24150 e+9 * MeV/mm
210
211//
212// Pressure [E][L^-3]
213//
214#define pascal hep_pascal                          // a trick to avoid warnings
215static const double hep_pascal = newton/m2;        // pascal = 6.24150 e+3 * MeV/mm3
216static const double bar        = 100000*pascal; // bar    = 6.24150 e+8 * MeV/mm3
217static const double atmosphere = 101325*pascal; // atm    = 6.32420 e+8 * MeV/mm3
218
219//
220// Electric potential [E][Q^-1]
221//
222static const double megavolt = megaelectronvolt/eplus;
223static const double kilovolt = 1.e-3*megavolt;
224static const double     volt = 1.e-6*megavolt;
225
226//
227// Electric resistance [E][T][Q^-2]
228//
229static const double ohm = volt/ampere;  // ohm = 1.60217e-16*(MeV/eplus)/(eplus/ns)
230
231//
232// Electric capacitance [Q^2][E^-1]
233//
234static const double farad = coulomb/volt;       // farad = 6.24150e+24 * eplus/Megavolt
235static const double millifarad = 1.e-3*farad;
236static const double microfarad = 1.e-6*farad;
237static const double  nanofarad = 1.e-9*farad;
238static const double  picofarad = 1.e-12*farad;
239
240//
241// Magnetic Flux [T][E][Q^-1]
242//
243static const double weber = volt*second;        // weber = 1000*megavolt*ns
244
245//
246// Magnetic Field [T][E][Q^-1][L^-2]
247//
248static const double tesla     = volt*second/meter2;     // tesla =0.001*megavolt*ns/mm2
249
250static const double gauss     = 1.e-4*tesla;
251static const double kilogauss = 1.e-1*tesla;
252
253//
254// Inductance [T^2][E][Q^-2]
255//
256static const double henry = weber/ampere;       // henry = 1.60217e-7*MeV*(ns/eplus)**2
257
258//
259// Temperature
260//
261static const double kelvin = 1.;
262
263//
264// Amount of substance
265//
266static const double mole = 1.;
267
268//
269// Activity [T^-1]
270//
271static const double becquerel = 1./second ;
272static const double curie = 3.7e+10 * becquerel;
273
274//
275// Absorbed dose [L^2][T^-2]
276//
277static const double gray = joule/kilogram ;
278
279//
280// Luminous intensity [I]
281//
282static const double candela = 1.;
283
284//
285// Luminous flux [I]
286//
287static const double lumen = candela*steradian;
288
289//
290// Illuminance [I][L^-2]
291//
292static const double lux = lumen/meter2;
293
294//
295// Miscellaneous
296//
297static const double perCent     = 0.01 ;
298static const double perThousand = 0.001;
299static const double perMillion  = 0.000001;
300
301#endif /* G4UNITSTEST_HH */
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