Test your strategy. Risk nothing.
Free practice credits, the exact barriers, payouts and draw function of the live accelerator. Try every volatility, every bet size, every particle count until you know how you want to play.
Practice accelerator
01Configure
Practice- Win chance
- 50%
- per particle
- ≥ 1 tunnels
- 96.9%
- 5 particles
- Total bet
- 50
- credits
- Max win
- 93
- 1.86× on every particle
02Practice credits
loading03Provably fair
04Your shots
- Low barriers tunnel often and pay 1.86×. Steady sessions, smaller swings.
- Medium barriers land one in five and pay 4.65×.
- High barriers are long shots that pay 18.6×. Expect long dry runs.
- More particles per shot smooth out results; bigger energy per particle raises the stakes on every one of them.
- Practice results use the exact same draw function as the live accelerator, so what you learn here carries over.
The barrier, up close.
Every barrier in TUNNEL is modelled on quantum tunneling. Adjust a particle's energy and a barrier's height and width, and watch the wavefunction leak through.
01Experiment controls
Sets V₀ and a to the launch barrier, at energy level E3.
- Transmission T
- 25.743%
- Reflection R
- 74.257%
- E / V₀
- 0.500
- κa
- 1.300
- E
- 1.000
- V₀ · a
- 2.000 · 1.300
02Wavefunction ψ(x) · stationary scattering state
03Transmission probability vs energy
A particle of energy E approaches a rectangular barrier of height V₀ and width a. Solving the time-independent Schrödinger equation in three regions and matching ψ and dψ/dx at both edges gives the reflected amplitude r, the transmitted amplitude t and the two decaying/growing components inside the barrier.
Below the barrier (E < V₀) the wave inside is real-exponential with decay constant κ = √(2m(V₀−E))/ħ. What survives to the far edge continues as a travelling wave with probability T = |t|². Above the barrier, T oscillates and reaches exactly 1 at resonances where κa = nπ.
Units are normalized so that ħ²/2m = 1. With “Electron units” on, lengths are shown in nm (1 unit = 1 Å) and energies in eV (1 unit ≈ 3.81 eV). This is a simplified one-dimensional, time-independent model; real devices involve more physics.