Particles too fast!

The particle moves too fast!



I used already:

manager04.getParticleController().setSpeed(0.1f);



Any slower and the particles wouldn't move at all!


ParticleMesh manager04 = ParticleFactory.buildParticles("particles", 100);
       manager04.setEmissionDirection(new Vector3f(0.0f, 1.0f, 0.0f));
       manager04.setMaximumAngle(0.20943952f);
       manager04.getParticleController().setSpeed(0.1f);
       manager04.setMinimumLifeTime(100.0f);
       manager04.setMaximumLifeTime(200.0f);
       manager04.setStartSize(1.0f);
       manager04.setEndSize(0.5f);
       manager04.setStartColor(new ColorRGBA(1.0f, 0.312f, 0.121f, 1.0f));
       manager04.setEndColor(new ColorRGBA(1.0f, 0.312f, 0.121f, 0.0f));
       manager04.getParticleController().setControlFlow(false);
       manager04.setInitialVelocity(0.12f);
       manager04.setGeometry((Geometry)(cn.getChild(0)));
       manager04.warmUp(60);
       manager04.setRenderState(ts_03);
       manager04.setRenderState(as1);
       manager04.setLightCombineMode(LightCombineMode.Off);
       manager04.setTextureCombineMode(TextureCombineMode.Replace);



EDIT:

Ok I solved the problem
manager04.setEmissionDirection(new Vector3f(0.0f, 0.1f, 0.0f));


I have still a question!
How can I tell the particles, that they should be in front of the 3D object, so that you see them, even if they are inside the object! The particles should be only in front of this single object!
Would look funny, if you can see particles through a wall^^